Filed Pursuant to Rule 424(b)(5)

Registration No. 333-156705       

 

CALCULATION OF REGISTRATION FEE

 

 

PROSPECTUS SUPPLEMENT
(to Prospectus dated January 13, 2009)

$2,500,000,000

 

Ensco plc

 

$1,000,000,000 3.250% Senior Notes due 2016

$1,500,000,000 4.700% Senior Notes due 2021

 

 

 

 

This is an offering of $1,000,000,000 aggregate principal amount of our 3.250% Senior Notes due 2016 (the “2016 notes”) and $1,500,000,000 aggregate principal amount of our 4.700% Senior Notes due 2021 (the “2021 notes”). The 2016 notes and the 2021 notes are collectively referred to herein as the “notes.” We intend to use the net proceeds from this offering to finance a portion of the cash consideration in our pending merger with Pride International, Inc., as described in this prospectus supplement under “Pending Merger with Pride.”

The 2016 notes will mature on March 15, 2016 and the 2021 notes will mature on March 15, 2021. We will pay interest on the notes on each March 15 and September 15, commencing September 15, 2011.

We may redeem some or all of any series of the notes offered hereby at any time or from time to time at a price equal to 100% of the principal amount of the notes redeemed, plus accrued and unpaid interest to the redemption date and a “make-whole” premium, as described in this prospectus supplement. See “Description of Notes — Optional Redemption.” If the pending merger with Pride International, Inc. is not consummated prior to 5:00 p.m., New York City time, on February 3, 2012, or the agreement and plan of merger providing therefor is terminated, we must redeem all of the notes under the circumstances and at the redemption prices described in this prospectus supplement. See “Description of Notes — Special Mandatory Redemption.”

The notes will be our senior unsecured obligations and will rank equally in right of payment with all of our existing and future senior unsecured debt. The notes will be structurally subordinated to all debt and other liabilities of our subsidiaries and effectively subordinated to our secured debt to the extent of the value of the assets securing such debt. We have applied for listing of the notes on the New York Stock Exchange.

 

 

 

 

Investing in the notes involves risks. See “Risk Factors” beginning on page S-6.

 

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

 

 

 

 

 

 

 

We expect that the notes will be ready for delivery in book-entry form only through the facilities of The Depository Trust Company for the accounts of its participants, including Clearstream Banking, société anonyme, and Euroclear Bank S.A./N.V., as operator of the Euroclear System, against payment in New York, New York, on or about March 17, 2011.

 

Joint Book-Running Managers

 

 

 

 

Co-Managers

 

 

The date of this Prospectus Supplement is March 8, 2011.

 

TABLE OF CONTENTS

 

 

 

 

 

You should rely only on the information contained in or incorporated by reference in this prospectus supplement and the accompanying prospectus. We have not, and the underwriters have not, authorized anyone to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriters are not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should not assume that the information contained in this prospectus supplement, the accompanying prospectus and the documents incorporated by reference herein and therein is accurate as of its date or the date which is specified in those documents. Our business, financial condition, liquidity, results of operations and prospects may have changed since any such date.

 

 

 

 

 

We are a public limited company organized under the laws of England and Wales. As a result, it may be difficult for you to effect service of process or enforce judgments obtained against us within the United States or the U.S., predicated upon the civil liability provisions of the federal securities laws of the United States. There is doubt as to the enforceability of civil liabilities predicated on the U.S. federal securities laws in England, either in original actions or in actions for enforcement of judgments of U.S. courts.

 

This document consists of two parts. The first part is the prospectus supplement, which describes specific terms of the notes, the specific terms of this offering and adds to and updates information contained in the accompanying prospectus and the documents incorporated by reference into this prospectus supplement and the accompanying prospectus. The second part, the accompanying prospectus, provides more general information about the notes and other securities that may be offered from time to time using such prospectus, some of which general information does not apply to this offering. Generally, when we refer to the prospectus, we are referring to both parts of this document combined. You should read both this prospectus supplement and the accompanying prospectus, together with additional information described in this prospectus supplement under the heading “Where You Can Find More Information; Incorporation by Reference.”

 

Pursuant to Rule 414 of the Securities Act of 1933, as amended, Ensco plc (“Ensco”) is the successor issuer to ENSCO International Incorporated (“Ensco Delaware”) following a merger transaction completed in December 2009 whereby Ensco plc became Ensco Delaware’s ultimate parent company and our place of incorporation was changed from Delaware to England. Ensco plc (formerly named Ensco International plc) filed a post-effective amendment to the registration statement of which this prospectus supplement is a part to expressly adopt the registration statement, including the prospectus contained therein and accompanying this prospectus, as its own registration statement for all purposes under the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended.

 

If the information in the prospectus supplement differs from the information in the accompanying prospectus, the information in the prospectus supplement supersedes the information in the accompanying prospectus.

 

Any statement made in this prospectus supplement or in a document incorporated by reference in this prospectus supplement and the accompanying prospectus will be deemed to be modified or superseded for purposes of this prospectus supplement to the extent that a statement contained in this prospectus supplement or in any other subsequently filed document that is also incorporated by reference in this prospectus supplement and the accompanying prospectus modifies or supersedes that statement. Any statement so modified or superseded will not be deemed, except as so modified or superseded, to constitute a part of this prospectus supplement. See “Where You Can Find More Information; Incorporation by Reference” in this prospectus supplement.

 

Statements in this prospectus supplement regarding Pride International, Inc. (“Pride”) are based on information provided to us by management of Pride in connection with the pending merger with Pride.

 

You should rely only on the information contained in or incorporated by reference in this prospectus supplement, the accompanying prospectus or any free writing prospectus provided in connection with this offering. Neither we nor the underwriters have authorized anyone else to provide you different information. Neither we nor the underwriters are making any offer of these securities in any jurisdiction where the offer is not permitted. The information contained or incorporated by reference in this prospectus supplement, the accompanying prospectus and any free writing prospectus provided in connection with this offering is accurate only as of the respective dates thereof or, in the case of information incorporated by reference, only as of the date of such information, regardless of the time of delivery of this prospectus supplement, the accompanying prospectus or any free writing prospectus. Our business, financial condition, results of operations and prospects may have changed since such dates. It is important for you to read and consider all the information contained in this prospectus supplement and the accompanying prospectus, including the documents incorporated by reference therein, in making your investment decision.

 

Certain market and industry data included or incorporated by reference in this prospectus supplement and in the accompanying prospectus have been obtained from third party sources that we believe to be reliable. We have not independently verified such third party information and cannot assure you of its accuracy or completeness. While we are not aware of any misstatements regarding any market, industry or similar data presented herein, such data involve risks and uncertainties and are subject to change based on various factors, including those discussed under the headings “Forward-Looking Statements” and “Risk Factors” in this prospectus supplement.

 

 

We file annual, quarterly and special reports, proxy statements and other information with the Securities and Exchange Commission (the “SEC”). You may access, read and copy any materials we file with the SEC at the following SEC location:

 

Public Reference Room
100 F Street, N.E., Room 1580
Washington, D.C. 20549

 

You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. Our SEC filings are also available to the public over the Internet at the SEC website at http://www.sec.gov. In addition, you may inspect our SEC filings at the offices of the New York Stock Exchange, 20 Broad Street, New York, New York 10005.

 

The SEC allows us to “incorporate by reference” the information we file with the SEC into this prospectus supplement, which means that we can disclose important information by referring you to those documents. Any information referenced this way is considered to be part of this prospectus, and any information that we file later with the SEC will automatically update and supersede this information. We incorporate by reference the following documents that we have filed with the SEC:

 

 

We also incorporate by reference any future filings made with the SEC (other than information furnished pursuant to Item 2.02 or Item 7.01 of Form 8-K, Item 601 of Regulation S-K or as otherwise permitted by the SEC rules) under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended, before termination of the offering.

 

You may request a copy of any document incorporated by reference in this prospectus supplement or the accompanying base prospectus, at no cost, by writing or calling us at the following address and telephone number:

 

Ensco plc
Attention: Investor Relations
500 N. Akard, Suite 4300
Dallas, Texas 75201
(214) 397-3015

 

This prospectus supplement and the accompanying prospectus may contain certain forward-looking statements within the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include words or phrases such as “anticipate,” “believe,” “contemplate,” “estimate,” “expect,” “intend,” “plan,” “project,” “could,” “may,” “might,” “should,” “will” and words and phrases of similar import. These forward-looking statements appear in a number of places and include statements with respect to, among other matters: future operations; market conditions; cash generation; the impact of the BP Macondo well incident in the U.S. Gulf of Mexico (including the expected departure of deepwater rigs from the U.S Gulf of Mexico); contributions from our ultradeepwater semisubmersible rig fleet expansion program; high-grading the rig fleet by investing in new equipment and divesting selected assets; expense management; industry trends or conditions; the overall business environment; future levels of, or trends in, utilization, day rates, revenues, operating expenses, contract term, contract backlog, capital expenditures, insurance, financing and funding; future rig construction (including construction in progress and completion thereof), enhancement, upgrade or repair and timing thereof; future delivery, mobilization, contract commencement, relocation or other movement of rigs and timing thereof; future availability or suitability of rigs and the timing thereof; our intention to explore alternative strategies to keep underutilized rigs operating, statements regarding the likely outcome of litigation, legal proceedings, investigations or insurance or other claims and the timing thereof; the ability to integrate the operations of Ensco and Pride, as contemplated; the anticipated effects and results of the merger with Pride; the amount and timing of any cost savings, synergies or operational or administrative efficiencies expected to result from the proposed merger with Pride; and related transactions, including the contemplated financing of the transaction; and the consideration payable in connection with the merger with Pride.

 

Numerous factors could cause actual results to differ materially from those in the forward-looking statements, including:

 

 

 

 

Should one or more of these risks or uncertainties materialize (or the other consequences of such a development worsen), or should underlying assumptions prove incorrect, actual outcomes may vary materially from those forecasted or expected. All forward-looking statements, expressed or implied, included in this prospectus supplement and the accompanying prospectus are expressly qualified in their entirety by this cautionary statement. Except as required by law, we disclaim any intention or obligation to update publicly or revise any forward-looking statements in this prospectus supplement and the accompanying prospectus, whether as a result of new information, future events or otherwise.

 

SUMMARY

Issuer		Ensco plc.
Notes Offered		$1,000,000,000 principal amount of 3.250% Senior Notes due 2016.
		$1,500,000,000 principal amount of 4.700% Senior Notes due 2021.
Maturity Dates		The 2016 notes will mature on March 15, 2016.
		The 2021 notes will mature on March 15, 2021.
Interest Rates		Interest on the 2016 notes will accrue at a rate of 3.250% per annum.
		Interest on the 2021 notes will accrue at a rate of 4.700% per annum.
Interest Payment Dates		Interest on the notes will be payable on March 15 and September 15 of each year, commencing September 15, 2011, and will accrue from the issue date of the notes.
Ranking		The notes are unsecured and will rank equally in right of payment with all of our other existing and future senior unsecured indebtedness. As of December 31, 2010, as adjusted to give effect to the issuance of the notes and the merger with Pride, Ensco would have had outstanding $3,057 million of indebtedness, which includes $257 million of indebtedness of our subsidiaries that is guaranteed by Ensco.
		The notes will be structurally subordinated to all indebtedness and other liabilities of our subsidiaries. As of December 31, 2010, after giving effect to the pending merger with Pride, related transactions and this offering our subsidiaries would have had approximately $2,390 million of indebtedness, which includes a pro forma adjustment of $270 million to increase the carrying value of Pride’s long-term debt to its estimated fair value. See “Pending Merger with Pride” in this prospectus supplement. We are a holding company whose assets consist of direct and indirect ownership interests in, and whose business is conducted through, subsidiaries. Consequently, other than the indebtedness of Ensco described above, substantially all of the liabilities shown on our consolidated balance sheet are liabilities of our subsidiaries. In addition, the notes will be effectively subordinated to all of the secured indebtedness of Ensco. As of December 31, 2010, Ensco had no secured indebtedness.
Optional Redemption		We may redeem some or all of any series of the notes offered hereby at any time or from time to time at a price equal to 100% of the principal amount of the notes redeemed, plus accrued and unpaid interest to the redemption date and a “make-whole”

		premium, as described in this prospectus supplement. See “Description of Notes — Optional Redemption.”
Special Mandatory Redemption		The offering of the notes will be consummated prior to the closing of the pending merger with Pride. If we do not consummate the merger prior to 5:00 p.m., New York City time, on February 3, 2012, or the merger agreement is terminated at any time before such time but after the date which is six months after the issue date, we must redeem the notes at a redemption price equal to 102% of the aggregate principal amount of the notes, plus accrued and unpaid interest to the redemption date. If the merger agreement is terminated at any time before the date which is six months after the issue date, we must redeem the notes at a redemption price equal to 101% of the aggregate principal amount of the notes, plus accrued and unpaid interest to the redemption date. See “Description of Notes — Special Mandatory Redemption.” There can be no assurance that the merger will be consummated.
Tax Redemption		If certain changes in the law of any relevant Tax Jurisdiction (as defined in “Description of Notes — Additional Amounts”) become effective that would impose withholding taxes on payments on the notes, we may redeem the notes in whole, but not in part, at a redemption price of 100% of the aggregate principal amount thereof, together with accrued and unpaid interest, if any, to the redemption date and all Additional Amounts (as defined in “Description of Notes”), if any, which otherwise would be payable to the date of redemption. See “Description of Notes — Redemption for Changes in Taxes.”
Certain Covenants		The indenture governing the notes will contain covenants limiting our ability and the ability of certain subsidiaries to:
		• create liens on certain assets; and
		• engage in certain sale/leaseback transactions.
		These covenants are subject to a number of important limitations and exceptions.
Use of Proceeds		We intend to use the net proceeds from the notes offered hereby to fund a portion of the cash consideration for the pending merger with Pride as described in this prospectus supplement. See “Use of Proceeds.”
Absence of Market		The notes are a new issue of securities with no established trading market. Accordingly, we cannot provide assurance as to the development or liquidity of any market for any series of the notes as described in this prospectus supplement. See “Underwriting.”
Listing		We have applied for listing of the notes on the New York Stock Exchange (“NYSE”).
Governing Law		State of New York.
Risk Factors		Investing in the notes involves substantial risks. See “Risk Factors” beginning on page S-6 in this prospectus supplement for a description of certain of the risks you should consider before investing in the notes.

 

Investing in the notes offered in this prospectus supplement involves a high degree of risk. You should carefully consider the following risk factors, in addition to the other information contained in this prospectus supplement, including the matters addressed under “Forward-Looking Statements,” the accompanying prospectus and the information that we are incorporating by reference into this prospectus supplement, before purchasing any notes offered hereby. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also affect our business operations. If any of these risks actually occur, our business, financial condition and results of operations could suffer, and the trading price and liquidity of the notes offered in this prospectus supplement could decline, in which case you may lose all or part of your investment.

 

Risks Relating to our Business

 

The success of our business largely depends on the level of activity in the oil and gas industry, which can be significantly affected by volatile oil and natural gas prices.

 

The success of our business largely depends on the level of activity in offshore oil and natural gas exploration, development and production. Oil and natural gas prices, and market expectations of potential changes in these prices, may significantly affect the level of drilling activity. An actual decline, or the perceived risk of a decline, in oil and/or natural gas prices could cause oil and gas companies to reduce their overall level of activity or spending, in which case demand for our services may decline and revenues may be adversely affected through lower rig utilization and/or lower day rates.

 

Worldwide military, political, environmental and economic events also contribute to oil and natural gas price volatility. Numerous other factors may affect oil and natural gas prices and the level of demand for our services, including:

 

 

Continued effects of the economic recession could lead to a decline in demand for crude oil and natural gas. Further slowdowns in economic activity would likely reduce worldwide demand for energy and result in an extended period of lower crude oil and natural gas prices. In addition, continued hostilities in the Middle East and Africa and the occurrence or threat of terrorist attacks against the United States or other countries could further the downturn in the economies of the United States and those of other countries. Moreover, even during periods of high commodity prices, customers may cancel or curtail their drilling programs, or reduce their levels of capital expenditures for exploration and production for a variety of reasons, including their lack of success in exploration efforts. These factors could cause our revenues and margins to decline, decrease

daily rates and utilization of our rigs and limit our future growth prospects. Any significant decrease in daily rates or utilization, particularly for high-specification drillships or semisubmersible rigs, could materially reduce our revenues and profitability.

 

The offshore contract drilling industry historically has been cyclical, with periods of low demand and excess rig availability that could result in adverse effects on our business.

 

Operating results in the offshore contract drilling industry historically have been very cyclical and primarily are related to the demand for drilling rigs and the available supply of drilling rigs. Demand for rigs is directly related to the regional and worldwide levels of offshore exploration and development spending by oil and gas companies, which is beyond our control. Offshore exploration and development spending may fluctuate substantially from year-to-year and from region-to-region. A decline in demand for drilling rigs or an increase in drilling rig supply could adversely affect our financial position, operating results and cash flows.

 

The supply of offshore drilling rigs has increased in recent years. There are over 48 new jackups, 21 semisubmersible rigs and 33 drillships, including those of Ensco and Pride, reported to be on order or under construction with delivery expected by the end of 2013. This represents an increase of 10% for jackups, 11% for semisubmersibles and 51% for drillships in the respective total worldwide fleets. Not all of the rigs currently under construction have been contracted for future work upon delivery. There are no assurances that the market in general or a geographic region in particular will be able to fully absorb the supply of new rigs in future periods.

 

The increase in supply of offshore drilling rigs during 2011 and future periods could result in an oversupply of offshore drilling rigs and could cause a decline in utilization and/or day rates, a situation which could be exacerbated by a decline in demand for drilling rigs. Lower utilization and/or day rates in one or more of the regions in which we operate could adversely affect our revenues, utilization and profitability.

 

Certain events, such as limited availability or non-availability of insurance for certain perils in some geographic areas, rig loss or damage due to hurricanes, fire, explosion, blowouts, craterings, punchthroughs, wild wells, oil spills and leaks or spills of hazardous materials and other operational events, may impact the supply of rigs in a particular market and cause rapid fluctuations in utilization and day rates.

 

Future periods of reduced demand and/or excess rig supply may require us to idle additional rigs or enter into lower day rate contracts or contracts with less favorable terms. There can be no assurance that the current demand for drilling rigs will not decline in future periods. In addition, Ensco’s and Pride’s or their competitors’ rigs that are “stacked” (i.e., minimally crewed with little or no scheduled maintenance being performed) may re-enter the market. The entry into service of newly constructed, upgraded or reactivated units will increase market supply and could reduce, or curtail a strengthening of, day rates in the affected markets as rigs are absorbed into the active fleet. A decline in demand for drilling rigs or an increase in drilling rig supply could adversely affect our financial position, operating results and cash flows.

 

Our offshore drilling operations have been and could be further adversely impacted by the BP Macondo well incident and the resulting changes in regulation of offshore oil and gas exploration and development activity.

 

In May 2010, the U.S. Department of the Interior implemented a six-month moratorium/suspension on certain drilling activities in water depths greater than 500 feet in the U.S. Gulf of Mexico. The U.S. Department of the Interior subsequently issued Notices to Lessees, or NTLs, implementing additional safety and certification requirements applicable to drilling activities in the U.S. Gulf of Mexico, imposed additional requirements with respect to development and production activities in the U.S. Gulf of Mexico and has delayed the approval of applications to drill in both deepwater and shallow-water areas. On July 12, 2010, the U.S. Department of the Interior issued a revised moratorium/suspension on drilling in the U.S. Gulf of Mexico, which was lifted on October 12, 2010 after the adoption on September 30, 2010 of new regulations relating to the design of wells and testing of the integrity of wellbores, the use of drilling fluids, the functionality and testing of well control equipment, including third-party inspections, minimum requirements for personnel, blowout preventers and other safety regulations.

As a condition to lifting of the moratorium/suspension, the Bureau of Ocean Energy Management, Regulation and Enforcement, or the BOEMER, was directed to require that each operator demonstrate that it has written and enforceable commitments that ensure that containment resources are available promptly in the event of a blowout and that the chief executive officer of each operator certify to the BOEMER that the operator has complied with applicable regulations. The BOEMER intends to conduct inspections of each deepwater drilling operation for compliance with regulations, including but not limited to the testing of blowout preventers. It is unclear when these requirements will be satisfied, due in part to the limited staffing of the BOEMER.

 

Certain of our drilling rigs currently in the U.S. Gulf of Mexico have been or may be further affected by the regulatory developments and other actions that have or may be imposed by the U.S. Department of the Interior, including the regulations issued on September 30, 2010. The moratoriums/suspensions (which have been lifted), related NTLs, delays in processing drilling permits and other actions are being challenged in litigation by Ensco and others. Ensco rig utilization and day rates have been negatively influenced due to regulatory requirements and delays in our customers’ ability to secure permits, which has adversely affected revenues. Current or future NTLs or other directives and regulations may further impact our customers’ ability to obtain permits and commence or continue deep or shallow water operations in the U.S. Gulf of Mexico.

 

We have filed suit in the U.S. District Court for the Eastern District of Louisiana to seek relief from these actions which we believe violate the U.S. Administrative Procedure Act and the Outer Continental Shelf Lands Act. On February 17, 2011, the Court granted Ensco’s motion for a preliminary injunction compelling the BOEMER to process five pending drilling permit applications related to Ensco rigs within 30 days. However, the U.S. government has moved to stay this injunction. The BOEMER has issued a permit to one of our customers since the Court’s ruling, which is the first permit issued by the BOEMER to drill a deepwater well since the moratorium/suspension. We are not able to predict whether or at what frequency the BOEMER may issue further permits or the outcome of these legal proceedings, whether enforcement of any new actual or de facto moratorium/suspension and other related restrictions and delays will be enjoined, or whether the U.S. Department of the Interior will seek to implement additional restrictions on or prohibitions of drilling activities in the U.S. Gulf of Mexico.

 

We have 11 rigs under contract in the U.S. Gulf of Mexico, including three ultra-deepwater semisubmersible rigs such as ENSCO 8503. ENSCO 8503 has been sublet to work in French Guiana, and our customers may seek to move other rigs to locations outside the U.S. Gulf of Mexico, perform activities permitted under the enhanced safety requirements, assign or suspend the contracts or attempt to terminate our contracts pursuant to their respective force majeure or other provisions. In 2010, Pride took delivery of two of its new ultra-deepwater drillships under construction, the Deep Ocean Ascension and the Deep Ocean Clarion. The rigs were originally used in or intended for drilling operations in the U.S. Gulf of Mexico. However, due to the moratorium on drilling in the U.S. Gulf of Mexico and more recently due to regulatory changes that have created delays and uncertainty regarding the resumption of drilling in the U.S. Gulf of Mexico, BP Exploration & Production Inc., or BP E&P, agreed to place the Deep Ocean Ascension and Deep Ocean Clarion on special standby day rates. The rigs are expected to mobilize to regions outside of the U.S. Gulf of Mexico by mid-2011.

 

At this time, we cannot predict the impact of the BP Macondo well incident and resulting changes in the regulation of offshore oil and gas exploration and development activity on our operations or contracts, the extent to which drilling operations subsequent to the moratorium period will be affected, the extent to which the issuance of permits for new or continued drilling will be delayed, the effect on the cost or availability of relevant insurance coverage, the effect on the demand for our services in or outside the U.S. Gulf of Mexico or what actions may be taken by our customers, other industry participants or the U.S. or other governments in response to the incident. Future legislative or regulatory enactments may impose new requirements for well control and blowout prevention equipment that could increase our costs and cause delays in our operations due to unavailability of associated equipment.

 

Prolonged actual or de facto delays, moratoria or suspensions of drilling activity in the U.S. Gulf of Mexico and associated new regulatory, legislative or permitting requirements in the U.S. or elsewhere could materially adversely affect our financial condition, operating results or cash flows.

We may suffer losses if our customers terminate or seek to renegotiate our contracts, if operations are suspended or interrupted or if a rig becomes a total loss.

 

Our drilling contracts often are subject to termination without cause upon specific notice by the customer. Although contracts may require the customer to pay an early termination payment in the event of a termination for convenience (without cause), such payment may not fully compensate for the loss of the contract and some of our contracts permit termination by the customer without an early termination payment. In periods of rapid market downturn, our customers may not honor the terms of existing contracts (including contracts for new rigs under construction), may terminate contracts or may seek to renegotiate contract day rates and terms to conform with depressed market conditions.

 

Drilling contracts customarily specify automatic termination or termination at the option of the customer in the event of a total loss of the drilling rig and often include provisions addressing termination rights or reduction or cessation of day rates if operations are suspended or interrupted for extended periods due to breakdown of major rig equipment, unsatisfactory performance, “force majeure” events beyond the control of either party or other specified conditions. Our financial position, operating results and cash flows may be adversely affected by early termination of contracts, contract renegotiations or cessation of day rates while operations are suspended.

 

Rig construction, upgrade and enhancement projects are subject to risks, including delays and cost overruns, which could have a material adverse effect on our operating results. The risks are concentrated because our three ultra-deepwater semisubmersible rigs and two ultra-high specification harsh environment jackup rigs currently under construction are at a single shipyard in Singapore. These rigs do not have drilling contracts.

 

There are over 48 new jackups, 21 semisubmersible rigs and 33 drillships, including those of Ensco and Pride, reported to be on order or under construction with delivery expected by the end of 2013. This represents an increase of 10% for jackups, 11% for semisubmersibles and 51% for drillships in the respective total worldwide fleets. As a result, shipyards and third-party equipment vendors are under significant resource constraints to meet delivery obligations. Such constraints may lead to substantial delivery and commissioning delays and/or equipment failures and/or quality deficiencies. Furthermore, new drilling rigs may face start-up or other operational complications following completion of construction work or other unexpected difficulties including equipment failures, design or engineering problems that could result in significant downtime at reduced or zero day rates or the cancellation or termination of drilling contracts.

 

We currently have three ultra-deepwater semisubmersible rigs and two ultra-high specification harsh environment jackup rigs under construction. In addition, we may construct additional rigs and continue to upgrade the capability and extend the service lives of our existing rigs. Rig construction, upgrade, life extension and repair projects are subject to the risks of delay or cost overruns inherent in any large construction project, including the following:

 

 

 

Our risks are concentrated because our three ultra-deepwater semisubmersible rigs and two ultra-high specification harsh environment jackup rigs currently under construction are at a single shipyard in Singapore. Although based on the design of ENSCO 7500 which has operated without significant downtime since its delivery in 2000, the three ultra-deepwater semisubmersible rigs and the recently delivered ENSCO 8500, ENSCO 8501, ENSCO 8502 and ENSCO 8503 have a common risk of unforeseen design or engineering problems.

 

ENSCO 8504, ENSCO 8505, ENSCO 8506, and the two ultra-high specification harsh environment jackup rigs currently under construction have not secured drilling contracts upon completion of their construction. These rigs are scheduled to be delivered during the third quarter of 2011, first and second half of 2012 and first and second half of 2013, respectively. There is no assurance that we will secure drilling contracts for these rigs or that the drilling contracts we may be able to secure will be based upon rates and terms that will provide a reasonable rate of return on these investments. Our failure to secure contractual commitments for these rigs at rates and terms that result in a reasonable return upon completion of construction may result in a material adverse effect on our financial position, operating results and cash flows. If we are able to secure drilling contracts prior to completion, we will be exposed to the risk of delays that could impact the projected financial results or the viability of the contracts and could have a material adverse effect on our financial position, operating results and cash flows.

 

Deterioration of the global economy and/or a decline in oil and natural gas prices could cause our customers to reduce spending on exploration and development drilling. These conditions could also cause our customers and/or vendors to fail to fulfill their commitments and/or fund future operations and obligations, which could have a material adverse effect on our business.

 

The success of our business largely depends on the level of activity in offshore oil and natural gas exploration and development drilling worldwide. Oil and natural gas prices, and market expectations of potential changes in these prices, significantly impact the level of worldwide drilling activity.

 

A decline in oil and natural gas prices, whether caused by economic conditions, international or national climate change regulations or other factors, could cause oil and gas companies to reduce their overall level of drilling activity and spending. Disruption in the capital markets could also cause oil and gas companies to reduce their overall level of drilling activity and spending.

 

Historically, when drilling activity and spending decline, utilization and day rates also decline and drilling activity may be reduced or discontinued, resulting in an oversupply of drilling rigs. The oversupply of drilling rigs could be exacerbated by the entry of newbuild rigs into the market. When idled or stacked, drilling rigs do not earn revenues, but continue to require cash expenditures for crews, fuel, insurance, berthing and associated items.

 

A decline in oil and natural gas prices, together with a deterioration of the global economy, could substantially reduce demand for drilling rigs and adversely affect our financial position, operating results and cash flows.

 

We may incur asset impairments as a result of declining demand for offshore drilling rigs.

 

We evaluate the carrying value of our property and equipment, primarily our drilling rigs, when events or changes in circumstances indicate that the carrying value of such rigs may not be recoverable. The offshore drilling industry historically has been highly cyclical, and it is not unusual for rigs to be unutilized or

underutilized for significant periods of time and subsequently resume full or near full utilization when business cycles change. Likewise, during periods of supply and demand imbalance, rigs are frequently contracted at or near cash break-even rates for extended periods of time until day rates increase when demand comes back into balance with supply. However, if the global economy were to deteriorate and/or the offshore drilling industry were to incur a significant prolonged downturn, impairment charges may occur with respect to specific individual rigs, groups of rigs, such as a specific type of drilling rig, or rigs in a certain geographic location.

 

We test goodwill for impairment on an annual basis or when events or changes in circumstances indicate that a potential impairment exists. The goodwill impairment test requires us to identify reporting units and estimate each unit’s fair value as of the testing date. In most instances, our calculation of the fair value of our reporting units is based on estimates of future discounted cash flows to be generated by our drilling rigs, which reflect management’s judgments and assumptions regarding the appropriate risk-adjusted discount rate, as well as future industry conditions and operations, including expected utilization, day rates, expense levels, capital requirements and terminal values for each of our rigs. If the aggregate fair value of our reporting units exceeds our market capitalization, we evaluate the reasonableness of the implied control premium. If we determine the implied control premium is not reasonable, we adjust the discount rate in our discounted cash flow model and reduce the estimated fair values of our reporting units.

 

If the global economy were to deteriorate and the offshore drilling industry were to incur a significant prolonged downturn, our expectations of future cash flows may decline and could ultimately result in a goodwill impairment. Additionally, a significant decline in the market value of our shares could result in a goodwill impairment.

 

Our business may be materially adversely affected if certain customers cease to do business with us.

 

We provide our services to major international, government-owned and independent oil and gas companies. During 2010, our five largest customers accounted for 43% of consolidated revenues in the aggregate, with our two largest customers representing 25% of consolidated revenues. Our financial position, operating results and cash flows may be materially adversely affected if a major customer terminates its contracts with us, fails to renew its existing contracts with us, requires renegotiation of our contracts or declines to award new contracts to us.

 

Failure to recruit and retain key employees and skilled personnel could adversely affect our performance, operations and financial results following the merger.

 

We will need to recruit and retain key employees and skilled personnel to operate our drilling rigs, manage our business and provide technical services and support for our business. Competition for skilled and other labor has intensified as additional rigs are added to the worldwide fleet. There are over 48 new jackups, 21 semisubmersible rigs and 33 drillships, including those of Ensco and Pride, reported to be on order or under construction with delivery expected by the end of 2013. This represents an increase of 10% for jackups, 11% for semisubmersibles and 51% for drillships in the respective total worldwide fleets. These rigs will require new skilled and other personnel to operate. In periods of high utilization, it is more difficult and costly to recruit and retain qualified employees. Competition for such personnel could increase future operating expenses, with a resulting reduction in net income, or impact our ability to fully staff and operate the rigs.

 

Notwithstanding current global economic conditions, we may be required to maintain or increase existing levels of compensation to retain our skilled workforce. Much of the skilled workforce is nearing retirement age, which may impact the availability of skilled personnel. We also are subject to potential further unionization of our labor force or legislative or regulatory action that may impact working conditions, paid time off or other conditions of employment. If such labor trends continue, they could further increase our costs or limit our ability to fully staff and operate our rigs.

 

Our performance following the merger will require the successful integration of different business units and geographic areas of operation. The loss of key supervising and management personnel could adversely affect our ability to operate efficiently because of the experience and knowledge of such personnel. The loss of the services of key employees and skilled personnel could adversely affect our future operating results.

Our drilling contracts with national oil companies expose us to greater risks than we normally assume.

 

We currently have 12 rigs contracted with national oil companies. Pride also has 10 rigs contracted with national oil companies. The terms of these non-U.S. contracts are often non-negotiable and may expose us to greater commercial, political and operational risks than we assume in other contracts such as exposure to greater environmental liability, the risk that the contract may be terminated by our customer without cause on short-term notice, contractually or by governmental action, under certain conditions that may not provide us an early termination payment, collection risks and political risks. We can provide no assurance that the increased risk exposure will not have an adverse impact on our future operations or that we will not increase the number of rigs contracted to national oil companies with commensurate additional contractual risks.

 

Our drilling rig fleet is concentrated in premium jackup rigs, which leaves us vulnerable to risks related to lack of diversification.

 

The offshore contract drilling industry is generally divided into two broad markets: deepwater and shallow water drilling. These broad markets are generally divided into smaller sub-markets based upon various factors, including the type of drilling rig. The primary types of drilling rigs include jackup rigs, semisubmersible rigs, drillships, platform rigs, barge rigs and submersible rigs. While all drilling rigs are affected by general economic and industry conditions, each type of drilling rig can be affected differently by changes in demand. We currently have 40 jackup rigs, five ultra-deepwater semisubmersible rigs and one barge rig. Additionally, we have three ultra-deepwater semisubmersible rigs and two ultra-high specification harsh environment jackup rigs under construction.

 

Our drilling rig fleet is concentrated in premium jackup rigs. If the market for premium jackup rigs should decline relative to the markets for other drilling rig types, our operating results could be more adversely affected relative to our competitors with drilling fleets that are less concentrated in premium jackup rigs.

 

Our non-U.S. operations involve additional risks not associated with U.S. operations.

 

Revenues from non-U.S. operations were 75%, 86% and 79% of our total revenues during 2010, 2009 and 2008, respectively. Our non-U.S. operations and shipyard rig construction and enhancement projects are subject to political, economic and other uncertainties, including:

 

 

We historically have maintained insurance coverage and obtained contractual indemnities that protect us from some, but not all, of the risks associated with our non-U.S. operations such as nationalization, deprivation, confiscation, political and war risks. However, there can be no assurance that any particular type

of contractual or insurance protection will be available in the future or that we will be able to purchase our desired level of insurance coverage at commercially feasible rates. Moreover, we may initiate a self-insurance program through one or more captive insurance subsidiaries. In circumstances where we have insurance protection for some or all of the risks associated with non-U.S. operations, such insurance may be subject to cancellation on short notice, and it is unlikely that we will be able to remove our rig or rigs from the affected area within the notice period. Accordingly, a significant event for which we are uninsured, underinsured or self-insured, or for which we have not received an enforceable contractual indemnity from a customer, could cause a material adverse effect on our financial position, operating results and cash flows.

 

We are subject to various tax laws and regulations in substantially all countries in which we operate or have a legal presence. We evaluate applicable tax laws and employ various business structures and operating strategies to obtain the optimal level of taxation on our revenues, income, assets and personnel. Actions by tax authorities that impact our business structures and operating strategies, such as changes to tax treaties, laws and regulations, or the interpretation or repeal of same, adverse rulings in connection with audits or otherwise, or other challenges may substantially increase our tax expense.

 

Our non-U.S. operations also face the risk of fluctuating currency values, which can impact our revenues, operating costs and capital expenditures. We currently conduct contract drilling operations in certain countries that have experienced substantial fluctuations in the value of their currency compared to the U.S. dollar. In addition, some of the countries in which we operate have occasionally enacted exchange controls. Historically, these risks have been limited by invoicing and receiving payment in U.S. dollars (our functional currency) or freely convertible currency and, to the extent possible, by limiting acceptance of foreign currency to amounts which approximate our expenditure requirements in such currencies. However, there is no assurance that our contracts will contain such terms in the future.

 

A portion of the costs and expenditures incurred by our non-U.S. operations, including a portion of the construction payments for the ENSCO 8500 Series^® rigs, are settled in local currencies, exposing us to risks associated with fluctuation in the value of these currencies relative to the U.S. dollar. We use foreign currency forward contracts to reduce this exposure. However, the relative weakening in the value of the U.S. dollar in relation to the local currencies in these countries may increase our costs and expenditures.

 

Our non-U.S. operations are also subject to various laws and regulations in countries in which we operate, including laws and regulations relating to the operation of drilling rigs and the requirement for equipment thereon. Governments in some non-U.S. countries have become increasingly active in regulating and controlling the ownership of oil, natural gas and mineral concessions and companies holding concessions, the exploration of oil and natural gas and other aspects of the oil and gas industry in their countries. In addition, government action, including initiatives by OPEC, may continue to cause oil and/or natural gas price volatility. In some areas of the world, government activity has adversely affected the amount of exploration and development work performed by major international oil companies and may continue to do so. Moreover, certain countries accord preferential treatment to local contractors or joint ventures, which can place us at a competitive disadvantage. There can be no assurance that such laws and regulations or activities will not have a material adverse effect on our future operations.

 

The potential for Gulf of Mexico hurricane related windstorm damage or liabilities could result in uninsured losses and may cause us to alter our operating procedures during hurricane season, which could adversely affect our business.

 

Certain areas in and near the Gulf of Mexico experience hurricanes and other extreme weather conditions on a relatively frequent basis. Some of our drilling rigs in the Gulf of Mexico are located in areas that could cause them to be susceptible to damage and/or total loss by these storms, and we have a larger concentration of jackup rigs in the Gulf of Mexico than most of our competitors. We currently have nine jackup rigs and three ultra-deepwater semisubmersible rigs in the Gulf of Mexico. Damage caused by high winds and turbulent seas could result in rig loss or damage, termination of drilling contracts on lost or severely damaged rigs or curtailment of operations on damaged drilling rigs with reduced or suspended day rates for significant periods of time until the damage can be repaired. Moreover, even if our drilling rigs are not directly damaged by such

storms, we may experience disruptions in our operations due to damage to our customers’ platforms and other related facilities in the area. Our drilling operations in the Gulf of Mexico have been impacted by hurricanes, including the total loss of one jackup rig during 2004, one platform rig during 2005 and one jackup rig during 2008, with associated loss of contract revenues and potential liabilities.

 

Insurance companies incurred substantial losses in the offshore drilling, exploration and production industries as a consequence of hurricanes that occurred in the Gulf of Mexico during 2004, 2005 and 2008. Accordingly, insurance companies have substantially reduced the nature and amount of insurance coverage available for losses arising from named tropical storm or hurricane damage in the Gulf of Mexico (“windstorm damage”) and have dramatically increased the cost of available windstorm coverage. The tight insurance market not only applies to coverage related to Gulf of Mexico windstorm damage or loss of our drilling rigs, but also impacts coverage for potential liabilities to third parties associated with property damage, personal injury or death and environmental liabilities as well as coverage for removal of wreckage and debris associated with hurricane losses. We have no assurance that the tight insurance market for windstorm damage, liabilities and removal of wreckage and debris will not continue into the foreseeable future.

 

Upon renewal of our annual insurance policies effective July 1, 2010, we obtained $450.0 million of annual coverage for ultra-deepwater semisubmersible rig hull and machinery losses arising from Gulf of Mexico windstorm damage with a $50.0 million per occurrence self-insured retention (deductible). However, due to the significant premium, high self-insured retention and limited coverage, we decided not to purchase windstorm insurance for our jackup rigs remaining in the Gulf of Mexico. Accordingly, we have retained the risk for loss or damage of our nine jackup rigs remaining in the Gulf of Mexico arising out of windstorm damage.

 

Our current liability insurance policies only provide coverage for Gulf of Mexico windstorm exposures for removal of wreckage and debris in excess of $50.0 million per occurrence as respects both our jackup and ultra-deepwater semisubmersible rig operations and have an annual aggregate limit of $450.0 million. Our limited windstorm insurance coverage exposes us to a significant level of risk due to jackup rig damage or loss related to severe weather conditions caused by Gulf of Mexico hurricanes.

 

We have established operational procedures designed to mitigate risk to our jackup rigs in the Gulf of Mexico during hurricane season. In addition to procedures designed to better secure the drilling package on jackup rigs, improve jackup leg stability and increase the air gap to position the hull above waves, our procedures involve analysis of prospective drilling locations, which may include enhanced bottom surveys. These procedures may result in a decision to decline to operate on a customer designated location during hurricane season notwithstanding that the location, water depth and other standard operating conditions are within a rig’s normal operating range. Our procedures and the associated regulatory requirements addressing Mobile Offshore Drilling Unit operations in the Gulf of Mexico during hurricane season, coupled with our decision to retain (self-insure) certain windstorm related risks, may result in a significant reduction in the utilization of our jackup rigs in the Gulf of Mexico.

 

As noted above, we have a $50.0 million per occurrence deductible for windstorm loss or damage to our ultra-deepwater semisubmersible rigs in the Gulf of Mexico and have elected not to purchase loss or damage insurance coverage for our nine jackup rigs in the area. Moreover, we have retained the risk for the first $50.0 million of liability exposure for removal of wreckage and debris resulting from windstorm related exposures associated with our rigs in the Gulf of Mexico. In the future, we may elect to no longer purchase insurance coverage (or self-insure) for windstorm loss or damage for our rigs in the Gulf of Mexico. These and other retained exposures for property loss or damage and wreckage and debris removal or other liabilities associated with Gulf of Mexico hurricanes could have a material adverse effect on our financial position, operating results and cash flows if we sustain significant uninsured or underinsured losses or liabilities as a result of Gulf of Mexico hurricanes.

 

The loss of Ensco 74 may expose us to costs associated with removal of wreckage and debris, liabilities for property loss or damage, personal injury or death or environmental liabilities that may not be fully recoverable under our insurance or contractual indemnities.

 

In September 2008, ENSCO 74 was lost as a result of Hurricane Ike in the Gulf of Mexico. Portions of its legs remained underwater adjacent to the customer’s platform, and we conducted extensive aerial and sonar

reconnaissance but did not locate the rig hull. In March 2009, the sunken rig hull of ENSCO 74 was located approximately 95 miles from the original drilling location when it was struck by an oil tanker. As an interim measure, the wreckage was appropriately marked, and the U.S. Coast Guard issued a Notice to Mariners. During the fourth quarter of 2010, wreck removal operations on the sunken rig hull of ENSCO 74 were completed. As of December 31, 2010, wreckage and debris removal costs had been incurred and paid by Ensco totaling $26.8 million related to removal of the hull, substantially all of which has been recovered through insurance without any additional retention.

 

We were involved in civil litigation in the U.S. District Court for the Southern District of Texas in which the owners of the tanker SKS Satilla were seeking monetary damages of $10.0 million for losses incurred when the tanker struck the sunken hull of ENSCO 74. This proceeding has been permanently stayed. We were involved in civil litigation in the U.S. District Court for the Southern District of Texas in which the owner of a pipeline, High Island Offshore System, LLC, alleged that ENSCO 74 damaged the pipeline in the aftermath of Hurricane Ike and is seeking damages for the cost of repairs and business interruption in excess of $26.0 million. Each of these proceedings has been permanently stayed and, as described below, effectively superseded by the proceeding described below.

 

We also were involved in civil litigation in the Fifteenth Judicial Court for the Parish of Lafayette and in the Nineteenth Judicial Court for the Parish of Baton Rouge, State of Louisiana in which the owner of a pipeline, Sea Robin Pipeline Company, LLC, was seeking unspecified damages in relation to the cost of repairing damage to the pipeline, loss of revenues, survey and other damages allegedly caused by ENSCO 74 in the aftermath of Hurricane Ike. This proceeding has been permanently stayed and, as described below, effectively superseded by the proceeding described below.

 

The owners of two other subsea pipelines presented claims in the exoneration or limitation of liability proceedings we filed in U.S. District Court for the Southern District of Texas as described below. The claims were filed on behalf of Stingray Pipeline Company, LLC, and Tennessee Gas Pipeline seeking monetary damages incurred by reason of damage to pipelines allegedly caused by ENSCO 74 in the aftermath of Hurricane Ike. The Stingray claim is in the amount of $14.0 million, and the Tennessee Gas Pipeline claim is for unspecified damages.

 

We filed a petition for exoneration or limitation of liability under U.S. admiralty and maritime law in the U.S. District Court for the Southern District of Texas on September 2, 2009. The petition seeks exoneration from or limitation of liability for any and all injury, loss or damage caused, occasioned or occurred in relation to the ENSCO 74 loss in September 2008. The exoneration/limitation proceedings currently includes the SKS Satilla claim and the four pipeline claims described above, which effectively supersedes their prior civil litigation filings. The matter has been scheduled for trial in March 2012. See Note 12 to our consolidated financial statements for additional information on the loss of ENSCO 74 and associated contingencies.

 

We are exposed to costs associated with removal of the ENSCO 74 legs that remain underwater adjacent to the customer’s platform, in addition to the removal of related debris. Although we expect the cost of removal of the leg sections and related debris to be covered by available insurance and contractual indemnification, we may not be fully protected from such costs, liability or exposure (without any additional deductible or self-insured retention). Our liability insurance may not fully protect us from cost, liability or exposure associated with the loss of ENSCO 74. As respects liabilities to third-parties, including the aforementioned tanker and pipeline claims, our applicable insurance is subject to a $10.0 million per occurrence self-insured retention and an annual aggregate policy limit of $500.0 million. We believe all liabilities associated with the ENSCO 74 loss during Hurricane Ike resulted from a single occurrence under the terms of the applicable insurance policies. However, legal counsel for certain liability underwriters have asserted that the liability claims arise from separate occurrences. In the event of multiple occurrences, the self-insured retention is $15.0 million for two occurrences and $1.0 million for each occurrence thereafter.

Our business involves numerous operating hazards, and we are not fully insured against all operating hazards.

 

Contract drilling and offshore oil and gas operations in general are subject to numerous risks, including the following:

 

 

In addition to these risks to property and the environment, many of the hazards and risks associated with our operations and accidents or other events resulting from such hazards and risks, as well as our routine operations, expose our personnel, as well as personnel of our customers, subcontractors, vendors and other third-parties, to the risk of personal injury or death.

 

Although we currently maintain broad insurance coverage, subject to certain significant deductibles and levels of self-insurance or risk retention, it does not cover all types of losses and, in some situations such as rig loss or damage resulting from Gulf of Mexico hurricane related windstorm exposures, may not provide coverage for damages, in whole or in part, losses or liabilities resulting from our operations in whole or in part. Except for windstorm coverage on our Gulf of Mexico rigs subsequent to July 1, 2006, which was placed on a limited coverage basis, we historically have maintained insurance coverage for damage to or loss of our drilling rigs in amounts not less than the estimated fair market value thereof. Even when insured, we have encountered circumstances in which insurance companies have issued reservations of rights or denied coverage which has, in certain circumstances, resulted in litigation. However, in the event of total loss, such coverage is unlikely to be sufficient to recover the cost of a newly-constructed replacement rig. Since we do not maintain business interruption or loss of hire insurance, we are fully exposed to loss of contract drilling revenues resulting from rig loss or damage.

 

We generally obtain contractual indemnification obligating our customers to protect and indemnify us for all or part of the liabilities resulting from pollution and damage to the environment, damage to wells, reservoirs and other customer property, control of wild wells, drilling of relief wells and certain non-rig crew personnel injuries. Such indemnification protection may be qualified or limited and may exclude certain perils, causes or events or the application of local law. In some circumstances, we are unable to obtain indemnification protection for some or all of the risks generally assumed by our customers, including risks and liabilities relating to environmental damage or loss, well loss or damage or wild well control. The inability to obtain such indemnification or the failure of a customer to meet indemnification obligations or losses or liabilities resulting from uninsured or underinsured events could have a material adverse effect on our financial position, operating results and cash flows.

 

Our contracts generally protect us in whole or part from certain losses sustained as a result of our negligence, most frequently as respects pollution and damage to the environment, damage to wells or

reservoirs, control of wild wells, drilling of relief wells and consequential damages. However, losses resulting from contracts that do not contain such protection could have a material adverse affect on our financial position, operating results and cash flows. Losses resulting from our gross negligence or willful misconduct may not be protected contractually by specific provision or by application of law, and our insurance may not provide adequate protection for such losses. Moreover, we may not maintain the same types or levels of insurance in the future which would expose us to additional uninsured losses and liabilities.

 

Compliance with or breach of environmental laws can be costly and could limit our operations.

 

Our operations are subject to laws and regulations controlling the discharge of materials into the environment, pollution, contamination and hazardous waste disposal or otherwise relating to the protection of the environment. Environmental laws and regulations specifically applicable to our business activities could impose significant liability on us for damages, clean-up costs, economic loss, fines and penalties in the event of oil spills or similar discharges of pollutants or contaminants into the environment or improper disposal of hazardous waste generated in the course of our operations. To date, such laws and regulations have not had a material adverse effect on our operating results, and we have not experienced an accident that has exposed us to material liability for discharges of pollutants into the environment. However, the legislative and regulatory response to the BP Macondo well incident could substantially increase liabilities of oil and gas companies in respect of oil spills and also could increase our liabilities. In addition to potential increased liabilities, such legislative or regulatory action could impose increased financial, insurance or other requirements that may adversely impact the entire offshore drilling industry.

 

The International Convention on Oil Pollution Preparedness, Response and Cooperation, the U.K. Merchant Shipping Act 1995, the U.K. Merchant Shipping (Oil Pollution Preparedness, Response and Cooperation Convention) Regulations 1998 and other related legislation and regulations and the U.S. Oil Pollution Act of 1990, or OPA 90, and other U.S. federal statutes applicable to us and our operations, as well as similar statutes in Texas, Louisiana, other coastal states and other non-U.S. jurisdictions, address oil spill prevention and control and significantly expand liability, fine and penalty exposure across many segments of the oil and gas industry. Such statutes and related regulations impose a variety of obligations on us related to the prevention of oil spills, disposal of waste and liability for resulting damages. For instance, OPA 90 imposes strict and, with limited exceptions, joint and several liability upon each responsible party for oil removal costs as well as a variety of fines, penalties and damages. Failure to comply with these statutes and regulations, including OPA 90, may subject us to civil or criminal enforcement action, which may not be covered by contractual indemnification or insurance and could have a material adverse effect on our financial position, operating results and cash flows.

 

Events in recent years, including the BP Macondo well incident, have heightened governmental and environmental concerns about the oil and gas industry. From time to time, legislative proposals have been introduced that would materially limit or prohibit offshore drilling in certain areas. We are adversely affected by restrictions on drilling in certain areas of the U.S. Gulf of Mexico and elsewhere, including the conditions for lifting the recent moratorium/suspension in the U.S. Gulf of Mexico, the adoption of associated new safety requirements and policies regarding the approval of drilling permits, restrictions on development and production activities in the U.S. Gulf of Mexico and associated NTLs that have and may further impact our operations. If new laws are enacted or other government action is taken that restrict or prohibit offshore drilling in our principal areas of operation or impose environmental protection requirements that materially increase the liabilities, financial requirements, oil spill response capabilities or operating or equipment costs associated with offshore drilling, exploration, development or production of oil and natural gas, our financial position, operating results and cash flows could be materially adversely affected.

 

Laws and governmental regulations may add to costs, limit our drilling activity or reduce demand for our drilling services.

 

Our operations are affected by political developments and by laws and regulations that relate directly to the oil and gas industry, including initiatives to limit greenhouse gas emissions. The offshore contract drilling industry is dependent on demand for services from the oil and gas industry. Accordingly, we will be directly

affected by the approval and adoption of laws and regulations limiting or curtailing exploration and development drilling for oil and natural gas for economic, environmental, safety and other policy reasons. We may be exposed to risks related to new laws or regulations pertaining to climate change, carbon emissions or energy use that could reduce the use of oil or natural gas, thus reducing demand for hydrocarbon-based fuel and our drilling services. Governments also may pass laws or regulations encouraging or mandating the use of alternative energy sources, such as wind power and solar energy, which may reduce demand for oil and natural gas and our drilling services. Furthermore, we may be required to make significant capital expenditures or incur substantial additional costs to comply with new governmental laws and regulations. It is also possible that legislative and regulatory activity could adversely affect our operations by limiting drilling opportunities, reducing consumption of hydro-carbon fuels or significantly increasing our operating costs.

 

World political events, terrorist attacks, piracy and military action could affect the markets for our services and have a material adverse effect on our business and cost and availability of insurance.

 

World political events have resulted in military action in Afghanistan and Iraq, terrorist attacks globally and civil unrest, political demonstrations, mass strikes and government responses in Libya and other countries in North Africa and the Middle East. Military action by the United States or other nations could escalate; further acts of terrorism, piracy, kidnapping, extortion and acts of war may occur; and violence, civil war and general disorder may continue in North Africa and the Middle East. Such acts of terrorism, piracy, kidnapping, extortion, violence, civil war, mass strikes and government responses could be directed against companies such as Ensco. Such developments have caused instability in the world’s financial and insurance markets in the past. In addition, these developments could lead to increased volatility in prices for crude oil and natural gas and could affect the markets for our products and services. Insurance premiums could increase and coverages may be unavailable in the future. Any or all of these effects could have a material adverse effect on our business.

 

Legal proceedings could affect us adversely.

 

We are involved in litigation, including various claims, disputes and regulatory proceedings that arise in the ordinary course of business, many of which are uninsured and relate to commercial, employment or regulatory activities. We also are concluding an internal investigation relating to compliance with the anti-bribery, recordkeeping and accounting provisions of the U.S. Foreign Corrupt Practices Act, or FCPA, that focuses on activities related to our former operations in Nigeria and the associated accounting entries and internal accounting controls and have self-reported to the appropriate U.S. government authorities.

 

Although we cannot accurately predict the outcome of our litigation, claims, disputes, regulatory proceedings and investigations or the amount or impact of any associated liability or other sanctions, these matters could adversely affect our financial position, operating results or cash flows.

 

We have invested a portion of our cash in auction rate securities and we may be required to hold them indefinitely due to an illiquid market.

 

As of December 31, 2010, we held $50.1 million (par value) of auction rate securities. Auctions for most of our auction rate securities began to fail in February 2008, as there were more sellers than buyers at scheduled interest rate auctions and parties desiring to sell their auction rate securities were unable to do so. When an auction fails, the interest rate is adjusted according to the provisions of the associated security agreement. The majority of our auction rate securities are currently rated Aaa by Moody’s, AAA by Standard & Poor’s and/or AAA by Fitch. All of our auction rate securities were issued by state agencies and are supported by student loans for which repayment is substantially guaranteed by the U.S. government under the Federal Family Education Loan Program.

 

Auction failures and the resulting lack of liquidity have affected the entire auction rate securities market, and we are currently unable to determine whether these conditions will continue for an extended duration. While it is estimated that the majority of the auction rate securities market has been refinanced, student loan supported auction rate securities remain mostly constrained and illiquid. Although $16.7 million, $5.5 million and $6.0 million of our auction rate securities were redeemed at par value during the years ended December 31,

2010, 2009 and 2008, respectively, we are currently unable to determine whether issuers of our auction rate securities will attempt and/or be able to refinance.

 

We are also unable to determine if alternative markets that provide orderly purchases and sales of auction rate securities will develop. Pursuant to regulatory settlements, several major brokerage firms have offered to repurchase auction rate securities from retail investors, charities and small businesses, and use best efforts to provide liquidity to institutional investors within the next several years. However, we are currently unable to determine whether these brokerage firms will be able to comply with the terms of their regulatory settlements. Moreover, current global economic conditions may impede auction rate security repurchases.

 

Although we acquired our auction rate securities with the intention of selling them in the near-term, we do not currently expect to experience liquidity problems or alter any business plans if we maintain our investment in these securities indefinitely. Our auction rate securities have final maturity dates ranging from 2025 to 2047.

 

Failure to comply with the U.S. Foreign Corrupt Practices Act and terms of agreements with the U.S. Department of Justice, or the DOJ, and the SEC could result in fines, criminal penalties, contract terminations and an adverse effect on our business.

 

The DOJ and SEC and other authorities have a broad range of civil and criminal sanctions under the U.S. Foreign Corrupt Practices Act, referred to as the FCPA, and other laws, which they may seek to impose in appropriate circumstances. Recent civil and criminal settlements with a number of public corporations, including Pride, and individuals have included multi-million dollar fines, disgorgement, injunctive relief, guilty pleas, deferred prosecution agreements and other sanctions, including requirements that corporations retain a monitor to oversee compliance with the FCPA.

 

During the course of an internal audit and investigation relating to certain of Pride’s Latin American operations, Pride’s management and internal audit department received allegations of improper payments to foreign government officials. In February 2006, the Audit Committee of Pride’s Board of Directors assumed direct responsibility over the investigation and retained independent outside counsel to investigate the allegations, as well as corresponding accounting entries and internal control issues, and to advise the Audit Committee. Pride voluntarily disclosed information relating to the initial allegations and other information found in the investigation and compliance review to the DOJ and the SEC, and cooperated with these authorities.

 

Pride has entered into settlements with the DOJ and the SEC regarding the FCPA matters. The settlement with the DOJ included a deferred prosecution agreement, or DPA, between Pride and the DOJ and a guilty plea by Pride’s French subsidiary, Pride Forasol S.A.S., to FCPA-related charges. Under the DPA, the DOJ agreed to defer the prosecution of certain FCPA-related charges against Pride and agreed not to bring any further criminal or civil charges against Pride or any of its subsidiaries related to either any of the conduct set forth in the statement of facts attached to the DPA or any other information Pride disclosed to the DOJ prior to the execution of the DPA. Pride agreed, among other matters, to continue to cooperate with the DOJ, to continue to review and maintain its anti-bribery compliance program and to submit to the DOJ three annual written reports regarding its progress and experience in maintaining and, as appropriate, enhancing its compliance policies and procedures. If Pride complies with the terms of the DPA, the deferred charges against Pride will be dismissed with prejudice. If, during the term of the DPA, the DOJ determines that Pride has committed a felony under federal law, provided deliberately false information or otherwise breached the DPA, Pride could be subject to prosecution and penalties for any criminal violation of which the DOJ has knowledge, including the deferred charges.

 

In December 2010, pursuant to a plea agreement, Pride Forasol S.A.S. pled guilty in U.S. District Court to conspiracy and FCPA charges. Pride Forasol was sentenced to pay a criminal fine of $32.6 million and to serve a three-year term of organizational probation. The SEC investigation was resolved in November 2010. Without admitting or denying the allegations in a civil complaint filed by the SEC, Pride consented to the entry of a final judgment ordering disgorgement plus pre-judgment interest totaling $23.6 million and a permanent injunction against future violations of the FCPA. Under the terms of the deferred prosecution

agreement, as provided in the merger agreement, upon consummation of the merger, Ensco will assume the obligations of Pride under the deferred prosecution agreement, which will apply to Ensco and its subsidiaries following the merger. If there are any violations of the FCPA, the deferred prosecution agreement or the SEC injunction, any additional fines, sanctions or other penalties from other governmental authorities or any third party claims by other constituents of Pride in relation to these matters, it could significantly and adversely affect the results of operations of Ensco and Pride.

 

Further, Pride has received preliminary inquiries from governmental authorities of certain of the countries referenced in its settlements with the DOJ and the SEC. It could face additional fines, sanctions and other penalties from authorities in these and other relevant foreign jurisdictions, including prohibition of its participating in or curtailment of business operations in those jurisdictions and the seizure of its rigs or other assets. At this early stage of such inquiries, neither Ensco nor Pride is able to determine what, if any, legal liability may result. Pride’s customers in those jurisdictions could seek to impose penalties or take other actions adverse to our interests. Ensco and Pride could also face other third-party claims by directors, officers, employees, affiliates, advisors, attorneys, agents, stockholders, debt holders, or other interest holders or constituents of Pride.

 

Risks Related to our Redomestication to the U.K.

 

We have not requested an ruling from Her Majesty’s Revenue and Customs, or HMRC, on the U.K. tax aspects of the redomestication, and HMRC may disagree with our conclusions.

 

Based on current U.K. corporation tax law and the current U.K.-U.S. income tax treaty, as amended, we expect that the redomestication in 2009 will not result in any material U.K. corporation tax liability to Ensco plc. Further, we believe that we have satisfied all stamp duty reserve tax, or SDRT, payment and filing obligations in connection with the issuance and deposit of our Class A ordinary shares into the ADS facility pursuant to the deposit agreement governing the ADS facility.

 

However, if HMRC disagrees with this view, it may take the position that material U.K. corporation tax or SDRT liabilities or amounts on account thereof are payable by Ensco plc as a result of the redomestication, in which case we expect that we would contest such assessment. If we were unsuccessful in disputing the assessment, the implications could be materially adverse to us. We have not requested an HMRC ruling on the U.K. tax aspects of the redomestication, and there can be no assurance that HMRC will agree with our interpretations of U.K. corporation tax law or any related matters associated therewith.

 

The IRS may disagree with our conclusions on tax treatment of certain restructuring transactions following the redomestication.

 

We expect that the redomestication will not result in any material U.S. federal income tax liability to us, and the IRS has confirmed to us that it will not challenge our conclusion that the redomestication resulted in Ensco becoming tax resident in the U.K. However, the IRS may disagree with our assessments of the effects or interpretation of the tax laws, treaties or regulations or their enforcement with respect to certain restructuring transactions that it completed after the redomestication. In this event we may not realize the expected tax benefits of the redomestication, and our operating results may be adversely affected in comparison to what they would have been if the IRS agreed with our conclusions.

 

If Ensco plc and its non-U.S. subsidiaries become subject to U.S. federal income tax, our financial position, operating results and cash flows would be adversely affected.

 

Ensco plc and its non-U.S. subsidiaries will conduct their operations in a manner intended to minimize the risk that Ensco plc or its non-U.S. subsidiaries engage in the conduct of a U.S. trade or business. Our U.S. and U.S.-owned subsidiaries will continue to be subject to U.S. federal income tax on their worldwide income, and our non-U.S. subsidiaries will continue to be subject to U.S. federal income tax on their U.S. operations. However, if Ensco plc or any of its non-U.S. subsidiaries is or are determined to be engaged in a trade or business in the U.S., Ensco plc or such non-U.S. subsidiaries would be required to pay

U.S. federal income tax on income that is subject to the taxing jurisdiction of the U.S. If this occurs, our financial position, operating results and cash flows may be adversely affected.

 

The redomestication may not allow us to maintain a competitive consolidated effective income tax rate.

 

We believe the redomestication should improve our ability to maintain a competitive consolidated effective income tax rate because the U.K. corporate tax rate is lower than the U.S. corporate tax rate and because the U.K. has implemented a dividend exemption system that generally does not subject non-U.K. earnings to U.K. tax when such earnings are repatriated to the U.K. in the form of dividends from non-U.K. subsidiaries. In 2010, the new U.K. Government announced its intention that there will be a phased reduction in the headline rate of U.K. corporation tax from 27% to 24% by 2014, its lowest ever rate.

 

The U.K. has implemented controlled foreign companies rules, referred to as the CFC rules, under which, in certain circumstances, the income or profits of controlled non-U.K. resident companies which are subject to a lower level of taxation may be subject to U.K. corporation tax, subject to credit relief for foreign tax on those profits. The HMRC has granted us an exemption from the CFC rules in respect of our material non-U.K. operations under the “motive test” exemption until December 31, 2012, subject to certain conditions and limitations based on our facts and circumstances.

 

In June 2010, the new U.K. Government announced in its Emergency Budget that it aims to create the most competitive corporate tax system in the G20, and that as a first step it will reform the U.K.’s CFC rules, which it recognized as a key priority for U.K. multinationals. The U.K. Government’s policy is that the U.K.’s corporate tax system should focus more on profits from U.K. activity in determining the tax base, rather than attributing the worldwide income of a group to the U.K. It has been announced that legislation for new CFC rules will be introduced in the spring of 2012, allowing time to consider how to make the rules more competitive, to enhance long-term stability and to provide adequate protection of the U.K. tax base. The U.K. Government launched a consultation on full reform of the CFC rules in November 2010 which continued until late February 2011, and it intends to publish draft legislation in respect of the same during the second half of 2011. At the same time, the U.K. Government also launched a consultation on certain interim improvements to the current CFC rules, to make the rules easier to operate and, where possible, increase competitiveness. The U.K. Government published draft legislation in respect of the same on December 9, 2010. Legislation on interim improvements to the CFC rules will be introduced during the first half of 2011. The effect of any changes to the CFC rules on our effective rate of income taxation will not be clear until the new legislation is published and enacted in its entirety. However, it is anticipated that these reforms will generally be favorable to us, as compared to the current CFC rules. Nevertheless, as the U.K.’s current CFC rules for the most part do not apply to our material overseas operations until December 31, 2012, our ability to efficiently manage those operations with a view to managing our effective income tax rates may be restricted by virtue of the new CFC rules from January 1, 2013. In the event that the U.K. Government adopts changes to the CFC rules that have the effect of increasing our consolidated effective income tax rate, our results of operations may be adversely affected unless we are able to identify and implement any mitigating actions.

 

We cannot provide any assurances as to what our effective income tax rates will be because of, among other reasons, uncertainty regarding the nature and extent of our business activities in any particular jurisdiction in the future and the tax laws of such jurisdictions, as well as potential changes in U.K. and U.S. tax laws. Our actual effective income tax rates may vary from our expectations and those variances may be material. Additionally, the tax laws of other jurisdictions could change in the future, and such changes could cause a material change in our consolidated effective income tax rate.

 

We also could be subject to future audits conducted by U.K., U.S. and other tax authorities, and the resolution of such audits could significantly impact our effective income tax rates in future periods, as would any reclassification or other matter (such as changes in applicable accounting rules) that increases the amounts we have provided for income taxes in our consolidated financial statements. There can be no assurance that we would be successful in attempting to mitigate the adverse impacts resulting from any changes in law, audits and other matters. Our inability to mitigate the negative consequences of any changes in the law, audits and

other matters could cause our effective income tax rates to increase and our financial position, operating results or cash flows to be adversely affected.

 

Changes in laws, including tax law changes, could adversely affect Ensco, its subsidiaries and its securityholders.

 

Changes in tax laws, regulations or treaties or the interpretation or enforcement thereof, in the U.S., the U.K. or elsewhere, could adversely affect the tax consequences of the redomestication and post-redomestication internal restructuring to Ensco and its shareholders and/or our effective income tax rates (whether associated with the redomestication, the subsequent internal restructuring or otherwise). For example, one reason for the redomestication was to begin to align our structure so as to have an opportunity to take advantage of U.K. corporate tax rates, which are lower than the U.S. income tax rates, and to take advantage of the recent dividend exemption system implemented in the U.K., which generally does not subject earnings of non-U.K. subsidiaries to U.K. tax when such earnings are repatriated to the U.K. as dividends. Future changes in tax laws, regulations or treaties or the interpretation or enforcement thereof in general or any such changes resulting in a material change in the U.S. or U.K. tax rates in particular could reduce or eliminate the benefits that we expect to achieve from the redomestication.

 

Changes in effective income tax rates or adverse outcomes resulting from examination of our tax returns could adversely affect our financial results.

 

Changes in the valuation of our deferred tax assets and liabilities or changes in tax treaties, regulations, accounting principles or interpretations thereof in one or more countries in which we operate could result in a higher effective income tax rate on our worldwide earnings and such change could be significant to our financial results. Our future effective income tax rates could also be adversely affected by lower than anticipated earnings in countries where we have lower statutory rates and higher than anticipated earnings in countries where we have higher statutory rates. In addition, we are subject to examinations of our income tax returns by HMRC, the IRS and other tax authorities. We regularly assess the likelihood of adverse outcomes resulting from these examinations to determine the adequacy of our provision for income taxes. There can be no assurance that such examinations will not have an adverse effect on our financial position, operating results or cash flows.

 

The expected financial, logistical and operational benefits of the redomestication may not be realized.

 

There can be no assurances that all of the goals of the redomestication will be achieved, particularly as achievement of our goals is in many important respects subject to factors that we do not control. These factors include the reactions of U.K. and U.S. tax authorities, the reactions of third parties with whom we enter into contracts and conduct business and the reactions of investors and analysts.

 

While we expect that the redomestication will enable us to take advantage of lower U.K. tax rates and the benefits of the U.K. dividend exemption system for certain non-U.K. source dividends repatriated to the U.K. in the years after implementation of the redomestication to a greater extent than would likely have been available if the redomestication had not occurred, these benefits may not be achieved. In particular, U.K. or U.S. tax authorities may challenge our application and/or interpretation of relevant tax laws, regulations or treaties, valuations and methodologies or other supporting documentation. If they are successful in doing so, we may not experience the level of benefits we anticipate, or we may be subject to adverse tax consequences. Even if we are successful in maintaining our positions, we may incur significant expenses in defending our position and contesting claims or positions asserted by tax authorities.

 

Whether we realize other expected financial benefits of the redomestication will depend on a variety of factors, many of which are beyond our control. These factors include changes in the relative rate of economic growth in the U.K. compared to the U.S., our financial performance in jurisdictions with lower tax rates, foreign currency exchange rate fluctuations (especially as between the British pound and the U.S. dollar), and significant changes in trade, monetary or fiscal policies of the U.K. or the U.S., including changes in interest rates. It is difficult to predict or quantify the effect of these factors, individually and in the aggregate, in part

because the occurrence of any of these events or circumstances may be interrelated. If any of these events or circumstances occur, we may not be able to realize the expected financial benefits of the redomestication, and our expenses may increase to a greater extent than if we had not completed the redomestication.

 

Realization of the logistical and operational benefits of the redomestication is also dependent on a variety of factors including the geographic regions in which our rigs are deployed, the location of the business unit offices that oversee our global offshore contract drilling operations, the locations of our customer’s corporate offices and principal areas of operation and the location of our investors. If events or changes in circumstances occur affecting the aforementioned factors, we may not be able to realize the expected logistical and operational benefits of the redomestication which could adversly affect us.

 

We have less flexibility as a U.K. public limited company with respect to certain aspects of capital management than U.S. corporations due to increased shareholder approval requirements.

 

Directors of a Delaware and other U.S. corporation may issue, without further shareholder approval, shares of common stock authorized in its certificate of incorporation that were not already issued or reserved. The business corporation laws of Delaware and other U.S. states also provide substantial flexibility in establishing the terms of preferred stock. However, English law provides that a board of directors may only allot shares with the prior authorization of shareholders, such authorization being up to the aggregate nominal amount of shares and for a maximum period of five years, each as specified in the articles of association or relevant shareholder resolution. Such authorization would need to be renewed by our shareholders upon its expiration (i.e., at least every five years). A special resolution was adopted prior to the effective time of the redomestication in December 2009 to authorize the allotment of additional shares for a five-year term and renewal of such authorization for additional five-year terms may be sought more frequently.

 

English law also generally provides shareholders preemptive rights when new shares are issued for cash. However, it is possible for the articles of association or shareholders in a general meeting to exclude preemptive rights. Such an exclusion of preemptive rights may be for a maximum period of up to five years from the date of adoption of the articles of association, if the exclusion is contained in the articles of association, or from the date of the shareholder resolution, if the exclusion is by shareholder resolution. In either case, this exclusion would need to be renewed upon its expiration (i.e., at least every five years). A special resolution was adopted to exclude preemptive rights prior to the effective time of the redomestication in December 2009 for a five-year term and renewal of such exclusion for additional five-year terms may be sought more frequently.

 

English law prohibits us from conducting “on-market purchases” as our ADSs are not traded on a recognized investment exchange in the U.K. English law also generally prohibits a company from repurchasing its own shares by way of “off-market purchases” without the prior approval of 75% of its shareholders by special resolution. Such approval lasts for a maximum period of up to five years. Special resolutions were adopted prior to the effective time of the redomestication in December 2009 to permit “off-market purchases.” These special resolutions will need to be renewed upon expiration (i.e., at least every five years) to permit “off-market purchases” and renewal for additional five-year terms may be sought more frequently.

 

There can be no assurances that situations will not arise where such shareholder approval requirements for any of these actions would deprive our shareholders of substantial benefits.

 

The redomestication will result in additional ongoing costs.

 

The redomestication has resulted in an increase in some of our ongoing expenses and will require us to incur some new expenses. Some costs, including those related to relocation and employment of expatriate officers and other employees in our U.K. offices and holding Board of Directors meetings in the U.K., are expected to be higher than would be the case if our principal executive offices remained in the U.S. We also have incurred and expect to continue to incur additional expenses, including professional fees, to comply with U.K. corporate and tax laws.

Risks Relating to the Merger

 

Ensco and Pride may be required to comply with material restrictions or conditions to obtain the regulatory clearances and approvals required to complete the merger.

 

The merger is subject to review by the Antitrust Division of the DOJ and the Federal Trade Commission, which is referred to as the FTC, under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, or the HSR Act, and by other governmental entities under non-U.S. antitrust or competition merger control statutes. On February 28, 2011, Ensco and Pride filed the requisite notification forms under the HSR Act with the Antitrust Division and the FTC. Ensco and Pride have also filed the required notices with antitrust and competition authorities in Brazil.

 

The expiration or termination of the waiting period (and any extension of the waiting period) applicable to the merger under the HSR Act is a condition to closing the merger. The closing of the merger is also subject to the condition that there be no pending or threatened claim, proceeding or action by a U.S. governmental entity seeking to restrain, prohibit or rescind any transactions contemplated by the merger agreement as an actual or threatened violation of antitrust law or seeking to penalize a party for completing any such transaction and no final or preliminary administrative order denying approval or prohibiting the merger issued by antitrust and competition authorities in Brazil, in each case that would require either Ensco or Pride to dispose of assets or limit its freedom of action, except for such dispositions or limits that, in the reasonable good faith judgment of both Ensco and Pride, do not and are not reasonably likely to have a material adverse effect on Ensco or Pride, respectively. Ensco and Pride can provide no assurance that all required regulatory approvals will not contain terms, conditions or restrictions, such as the disposition of assets or limitations on freedom of action, that would be detrimental to Ensco after the effective time of the merger.

 

Additionally, even after the statutory waiting period, and any extensions of such period agreed to by the parties, under the HSR Act has expired, and even after completion of the merger, governmental authorities could seek to block or challenge the merger as they deem necessary or desirable in the public interest. In addition, in some jurisdictions’, a competitor, customer or other third party could initiate a private action under such jurisdictions antitrust laws challenging or seeking to enjoin the merger, before or after it is completed. Ensco or Pride may not prevail and may incur significant costs in defending or settling any action under the antitrust laws.

 

Any delay in completing the merger may substantially reduce the benefits expected to be obtained from the merger.

 

In addition to obtaining the required governmental clearances and approvals, the merger is subject to a number of other conditions beyond the control of Pride and Ensco that may prevent, delay or otherwise materially adversely affect its completion. Ensco and Pride cannot predict whether or when the conditions required to complete the merger will be satisfied. The requirements for obtaining the required clearances and approvals could delay the effective time of the merger for a significant period of time or prevent it from occurring. Any delay in completing the merger may materially adversely affect the synergies and other benefits that Ensco and Pride expect to achieve if the merger and the integration of their respective businesses are completed within the expected timeframe. If the pending merger with Pride is not consummated prior to 5:00 p.m., New York City time, on February 3, 2012 or merger agreement providing therefor is terminated before that time, we must redeem all of the notes under the circumstances and at the redemption prices described under “Description of Notes — Special Mandatory Redemption.”

 

Ensco’s future results of operations could be adversely affected if the goodwill recorded in the merger subsequently requires impairment.

 

When Ensco acquires a business, generally goodwill is recorded as an asset on its balance sheet and is equal to the excess amount it pays for the business, including the fair value of liabilities assumed, over the fair value of the tangible and identified intangible assets of the business it acquires. Financial Accounting Standards Board Accounting Standards Codification, or FASB ASC, Topic 350 requires that goodwill and other intangible assets that have indefinite useful lives not be amortized, but instead be tested at least annually for impairment, and that intangible assets that have finite useful lives be amortized over their useful lives.

FASB ASC Topic 350 provides specific guidance for testing goodwill and other indefinite lived intangible assets for impairment. FASB ASC Topic 350 requires Ensco’s management to make certain estimates, judgments and assumptions when allocating goodwill to reporting units and determining the fair value of those reporting units, including, among other matters, appropriate risk-adjusted discount rates, as well as future industry conditions and operations, expected utilization, day rates, expense levels, capital requirements and terminal values for each of Ensco’s rigs. Absent any impairment indicators, Ensco performs its impairment tests annually during the fourth quarter. Any future impairments would negatively impact Ensco’s results of operations for the period in which the impairment is recognized.

 

The businesses of Ensco and Pride, and any other businesses that Ensco may acquire after completion of the merger, may be difficult to integrate, disrupt Ensco’s business, dilute stockholder value or divert management’s attention.

 

Risks with respect to the combination of Ensco and Pride, and any other recent and future acquisitions, include:

 

 

Pending litigation against Pride and Ensco could result in an injuction preventing the consummation of the merger or may adversely affect Ensco’s business, financial condition or results of operations following the merger.

 

In connection with the merger, various lawsuits have been filed in the Delaware Court of Chancery and in the District Courts of Harris County, Texas, against Pride, its directors and Ensco and/or certain of its subsidiaries alleging violations of various fiduciary duties in approving the merger and that Ensco and/or Pride aided and abetted such alleged violations. Among other remedies, the plaintiffs seek to enjoin the merger. While Ensco and Pride believe these suits are without merit and intend to vigorously defend against such claims, the outcome of any such litigation is inherently uncertain. All applicable insurance policies may not provide sufficient coverage for the cost of defense and claims under these lawsuits, and certain of the defendants’ rights of indemnification with respect to these lawsuits will continue after the completion of the merger. The defense or settlement of any lawsuit or claim that remains unresolved at the time the merger closes may adversely affect Ensco’s business, financial condition or results of operations.

 

Many of the anticipated benefits of combining Ensco and Pride may not be realized.

 

Ensco and Pride entered into the merger agreement with the expectation that the merger would result in various benefits including, among others, synergies, cost savings, accretion to earnings per share in 2011, maintaining business and customer levels of activity and operating efficiencies. The success of the merger will depend, in part, on the combined company’s ability to realize these anticipated benefits from combining the businesses of Ensco and Pride. However, to realize these anticipated benefits, the combined company must successfully combine the businesses of Ensco and Pride. If we are not able to achieve these objectives, the anticipated benefits of the merger may not be realized fully or at all or may take longer to realize than expected.

 

Ensco and Pride have operated and, until the completion of the merger, will continue to operate independently. It is possible that the integration process could take longer than anticipated and could result in the loss of valuable employees or the disruption of each company’s ongoing businesses or inconsistencies in standards, controls, procedures, practices, policies and compensation arrangements, which could adversely affect the combined company’s ability to achieve the anticipated benefits of the merger. The combined company’s results of operations could also be adversely affected by any issues attributable to either company’s operations that arise or are based on events or actions that occur prior to the closing of the merger. Further, the size of the merger may make integration

difficult, expensive and disruptive, adversely affecting Ensco’s revenues after the merger. Ensco may have difficulty addressing possible differences in corporate cultures and management philosophies. Integration efforts, including the expected relocation of Ensco’s U.S. headquarters to Houston from Dallas, will also divert management attention and resources. These integration activities could have an adverse effect on the businesses of both Ensco and Pride during the transition period. The integration process is subject to a number of uncertainties. Although Ensco’s plans for integration are focused on minimizing those uncertainties to help achieve the anticipated benefits, no assurance can be given that these benefits will be realized or, if realized, the timing of their realization. Failure to achieve these anticipated benefits could result in increased costs or decreases in the amount of expected revenues and could adversely affect Ensco’s future business, financial condition, operating results and prospects. In addition, we may not be able to eliminate duplicative costs or realize other efficiencies from integrating the businesses to offset part or all of the transaction and merger-related costs incurred by Ensco and Pride.

 

Business issues currently faced by one company may be imputed to the operations of the other company.

 

To the extent that either Ensco or Pride currently has or is perceived by customers to have operational challenges, such as timely or efficient performance, safety issues or workforce issues, those challenges may raise concerns by existing customers of the other company following the merger which may limit or impede Ensco’s future ability to obtain additional work from those customers.

 

Ensco’s contract revenues after the merger could decrease if parties who are currently customers of both Ensco and Pride elect to reduce their reliance on the combined companies after the merger.

 

Ensco and Pride currently have some customer overlap. If any of these customers in common decreases their amount of business with either company following the merger to reduce their reliance on a single company, such decrease in business could adversely impact the sales and profitability of the combined companies following the merger.

 

Risks Relating to the Notes

 

Our substantial indebtedness could adversely affect our financial health and prevent us from fulfilling our obligations under the notes.

 

We will have substantial indebtedness after this offering and the completion of the pending merger. As of December 31, 2010, after giving effect to the pending merger with Pride, the related transactions as described under “Pending Merger with Pride,” and this offering, we would have had total indebtedness of $5,190 million including the indebtedness of Pride, which includes a pro forma adjustment of $270 million to increase the carrying value of Pride’s long-term debt to its estimated fair value, and we would have had $400 million of additional borrowing capacity under our revolving credit facility.

 

Our ability to make scheduled payments of principal of, or to pay the interest or premium, if any, on, or to refinance our indebtedness (including the notes), or to fund capital expenditures, acquisitions and other strategic initiatives will depend on our future performance, which, to a certain extent, is subject to general economic, financial, competitive, regulatory and other factors that are beyond our control. We cannot assure you that our business will generate sufficient cash flow from operations or that future borrowings will be available under our revolving credit facility or otherwise in an amount sufficient to enable us to service our indebtedness, including the notes, or to fund our other liquidity needs. Furthermore, our increased leverage resulting from this offering and the additional indebtedness expected to be incurred to finance the merger could adversely affect our business. In particular, it could increase our vulnerability to sustained, adverse macroeconomic weakness, limit our ability to obtain further financing, limit our ability to pursue certain operational and strategic opportunities, reduce our flexibility to respond to changing business and economic conditions and increase borrowing costs.

The notes will be structurally subordinated to all indebtedness and other liabilities of our subsidiaries and effectively subordinated to claims by secured creditors of Ensco.

 

The notes will be obligations solely of Ensco and will not be guaranteed by any of our subsidiaries. The notes will be structurally subordinated to any and all existing and future indebtedness, whether or not secured, and other liabilities of our subsidiaries. Our subsidiaries have no obligation to pay any amounts due on our debt securities, including the notes, or to provide us with funds for our payment obligations, whether by dividends, distributions, loans or otherwise. The indenture will not limit the ability of our subsidiaries to incur unsecured indebtedness. Any right that Ensco has to receive any assets of any of the subsidiaries upon the liquidation or reorganization of those subsidiaries, and the consequent rights of holders of notes to realize proceeds from the sale of any of those subsidiaries’ assets, will be subordinated to the claims of those subsidiaries’ creditors, including trade creditors and holders of preferred equity interests of those subsidiaries. The indenture will not restrict the ability of our subsidiaries to enter into agreements or other arrangements that have the effect of prohibiting or restricting their ability to pay dividends or otherwise make distributions to Ensco. As of December 31, 2010, after giving effect to the pending merger with Pride, related transactions as described under “Pending Merger with Pride” in this prospectus supplement and this offering our subsidiaries would have had approximately $2,390 million of indebtedness, which includes a pro forma adjustment of $270 million to increase the carrying value of Pride’s long-term debt to its estimated fair value. We are a holding company whose assets consist of direct and indirect ownership interests in, and whose business is conducted through, subsidiaries. Consequently, other than indebtedness of Ensco, substantially all of the liabilities shown on our consolidated balance sheet are liabilities of our subsidiaries.

 

In addition, the notes will be effectively subordinated to claims by any secured creditors Ensco may have to the extent of the value of the assets securing such claims. As of December 31, 2010, Ensco had no secured indebtedness. The indenture permits us to incur a substantial amount of additional secured indebtedness.

 

If we do not complete the acquisition of Pride on or prior to February 3, 2012, we will be required to redeem the notes and may not have or be able to obtain all the funds necessary to redeem the notes. In addition, if we are required to redeem the notes, you may not obtain your expected return on the notes.

 

Our ability to consummate the pending merger with Pride is subject to the approval of the shareholders of Ensco and the stockholders of Pride, regulatory approvals and the satisfaction or waiver of various other conditions, some of which are beyond our control, and we may not be able to complete the merger. There can be no assurance that the merger will be consummated. If we do not consummate the merger by the time specified in the “Description of Notes — Special Mandatory Redemption,” we will be required to redeem the notes. The proceeds of the notes are not being deposited into an escrow account for the benefit of the noteholders, and it is possible that we will not have sufficient financial resources available to satisfy our obligations to redeem the notes. This could be the case, for example, if we or any of our subsidiaries commence a bankruptcy or reorganization case, or such a case is commenced against us or one of our subsidiaries, before the date on which we are required to redeem the notes. In addition, if we redeem the notes pursuant to the special mandatory redemption provisions, you may not obtain your expected return on the notes and may not be able to reinvest the proceeds from a special mandatory redemption in an investment that results in a comparable return. Your decision to invest in the notes is made at the time of the offering of the notes. You will have no rights under the mandatory redemption provisions as long as the merger closes, nor will you have any right to require us to repurchase your notes if, between the closing of the notes offering and the closing of the merger, we experience any changes in our business or financial condition, or if the terms of the merger or the financing thereof change.

 

Active trading markets may not develop for the notes.

 

Each series of notes are new issues of securities. There are no active public trading markets for any series of the notes. We have applied for listing of the notes on the NYSE; however, we can give no assurances that these notes will be so listed. The underwriters of the notes have informed us that, if the notes are not listed on a securities exchange, they intend to make a market in the notes. However, the underwriters may cease their market-making at any time. The liquidity of the trading markets in the notes and the market prices quoted for

any series of the notes may be adversely affected by changes in the overall market for high yield securities and by changes in our financial performance or prospects or in the prospects for companies in our industries generally. As a consequence, an active trading market may not develop for your notes, you may not be able to sell your notes, or, even if you can sell your notes, you may not be able to sell them at an acceptable price.

 

We could enter into various transactions that could increase the amount of our outstanding debt, adversely affect our capital structure or credit ratings or otherwise adversely affect holders of the notes.

 

The terms of the notes do not prevent us from entering into a variety of acquisition, change-of-control, refinancing, recapitalization or other highly leveraged transactions. As a result, we could enter into a variety of transactions that could increase the total amount of our outstanding indebtedness, adversely affect our capital structure or credit ratings or otherwise adversely affect the holders of the notes.

 

To service our indebtedness, we will use a significant amount of cash. Our ability to generate cash to service our indebtedness depends on many factors beyond our control.

 

Our ability to make payments on our indebtedness, including these notes, and to fund planned capital expenditures will depend on our ability to generate cash in the future. This ability, to a certain extent, is subject to general economic, financial, competitive, legislative, regulatory and other factors that are beyond our control. We cannot assure you that cash flow generated from our business and other sources of cash, including future borrowings by us under our credit facility, will be sufficient to enable us to pay our indebtedness, including these notes, and to fund our other liquidity needs.

 

Our holding company structure creates a dependence on the earnings of our subsidiaries and may impair our ability to repay the notes.

 

We are a holding company whose assets consist of direct and indirect ownership interests in, and whose business is conducted through, subsidiaries. Consequently, our ability to repay our debt, including the notes, depends on the earnings of our subsidiaries, as well as our ability to receive funds from our subsidiaries through dividends, repayment of intercompany notes or other payments. The ability of our subsidiaries to pay dividends, repay intercompany notes or make other advances to us is subject to restrictions imposed by applicable laws, tax considerations and the terms of agreements governing our subsidiaries. Our foreign subsidiaries in particular may be subject to currency controls, repatriation restrictions, withholding obligations on payments to us, and other limits.

 

Investor enforcement of civil judgments against us may be more difficult.

 

Because we are a public limited company incorporated under English law, investors could experience more difficulty enforcing judgments obtained against us in U.S. courts than would have been the case for U.S. judgments obtained against us prior to the redomestication. In addition, it may be more difficult (or impossible) to bring some types of claims against us in courts in England than it would be to bring similar claims against a U.S. company in a U.S. court.

 

Business of Pride

 

Overview

 

Pride operates a fleet of 26 mobile offshore drilling units, consisting primarily of floating rigs (semisubmersibles and drillships) that address deepwater drilling programs around the world. Pride has one of the youngest and most technologically advanced deepwater drilling fleets in the offshore industry, with five drillships, including three delivered since 2010, six semisubmersible rigs and two managed, third-party-owned deepwater rigs. Two additional Pride deepwater drillships are currently under construction with expected deliveries in 2011 and 2013. Pride’s fleet also includes six other semisubmersible rigs and seven jackup rigs. Pride’s floating rig fleet operates primarily offshore Brazil and West Africa where the company has a long-standing presence. The merger will create the industry’s second-largest fleet of offshore drilling rigs.

 

Pride’s primary strategic focus is on ownership and operation of floating offshore rigs, particularly deepwater rigs. Since 2005, Pride has invested or committed to invest over $4.4 billion in the expansion of its deepwater fleet, including five new ultra-deepwater drillships, three of which were delivered in the first and third quarters of 2010 and the first quarter of 2011, and two of which are under construction with expected delivery dates in the fourth quarter of 2011 and third quarter of 2013. The three new drillships that have been delivered have multi-year contracts at favorable rates. Since 2005, Pride also has disposed of non-core assets, generating $1.6 billion in proceeds, enabling it to focus increasingly its financial and human capital on deepwater drilling. Pride’s contract backlog at December 31, 2010, totals $6.4 billion and is comprised primarily of contracts for deepwater rigs with large integrated oil and national oil companies possessing long-term development plans. Pride may not be able to perform under these contracts due to events beyond its control, and there can be no assurances that Pride’s customers will be able to or willing to fulfill their contractual commitments to Pride.

 

Pride provides contract drilling services to oil and natural gas exploration and production companies through the use of mobile offshore drilling rigs in U.S. and international waters. It provides the rigs and drilling crews and is responsible for the payment of operating and maintenance expenses. In addition, Pride provides rig management services on a variety of rigs, consisting of technical drilling assistance, personnel, repair and maintenance services and drilling operation management services.

 

Employees

 

As of December 31, 2010, Pride employed approximately 3,900 personnel and had approximately 400 contract personnel. Approximately 980 of its employees and contractors were located in the United States and 3,320 were located outside the United States. Rig crews constitute the majority of Pride’s employees. None of its U.S. employees are represented by a collective bargaining agreement. Many of Pride’s international employees are subject to industry-wide labor contracts within their respective countries.

 

Legal Proceedings

 

FCPA Investigation.  During the course of an internal audit and investigation relating to certain of Pride’s Latin American operations, Pride’s management and internal audit department received allegations of improper payments to foreign government officials. In February 2006, the Audit Committee of Pride’s Board of Directors assumed direct responsibility over the investigation and retained independent outside counsel to investigate the allegations, as well as corresponding accounting entries and internal control issues, and to advise the Audit Committee. Pride voluntarily disclosed information relating to the initial allegations and other information found in the investigation and compliance review to the DOJ and the SEC, and cooperated with these authorities.

 

Pride has entered into settlements with the DOJ and the SEC regarding the FCPA matters. The settlement with the DOJ included a deferred prosecution agreement, or DPA, between Pride and the DOJ and a guilty plea by Pride’s French subsidiary, Pride Forasol S.A.S., to FCPA-related charges. Under the DPA, the DOJ

agreed to defer the prosecution of certain FCPA-related charges against Pride and agreed not to bring any further criminal or civil charges against Pride or any of its subsidiaries related to either any of the conduct set forth in the statement of facts attached to the DPA or any other information Pride disclosed to the DOJ prior to the execution of the DPA. Pride agreed, among other matters, to continue to cooperate with the DOJ, to continue to review and maintain its anti-bribery compliance program and to submit to the DOJ three annual written reports regarding its progress and experience in maintaining and, as appropriate, enhancing its compliance policies and procedures. If Pride complies with the terms of the DPA, the deferred charges against Pride will be dismissed with prejudice. If, during the term of the DPA, the DOJ determines that Pride has committed a felony under federal law, provided deliberately false information or otherwise breached the DPA, Pride could be subject to prosecution and penalties for any criminal violation of which the DOJ has knowledge, including the deferred charges.

 

In December 2010, pursuant to a plea agreement, Pride Forasol S.A.S. pled guilty in U.S. District Court to conspiracy and FCPA charges. Pride Forasol was sentenced to pay a criminal fine of $32.6 million and to serve a three-year term of organizational probation. The SEC investigation was resolved in November 2010. Without admitting or denying the allegations in a civil complaint filed by the SEC, Pride consented to the entry of a final judgment ordering disgorgement plus pre-judgment interest totaling $23.6 million and a permanent injunction against future violations of the FCPA. Under the terms of the deferred prosecution agreement, as provided in the merger agreement, upon consummation of the merger, Ensco will assume the obligations of Pride under the deferred prosecution agreement, which will apply to Ensco and its subsidiaries following the merger.

 

Further, Pride has received preliminary inquiries from governmental authorities of certain of the countries referenced in its settlements with the DOJ and the SEC. Pride could face additional fines, sanctions and other penalties from authorities in these and other relevant foreign jurisdictions, including prohibition of its participating in or curtailment of business operations in those jurisdictions and the seizure of its rigs or other assets. At this early stage of such inquiries, neither Ensco nor Pride is able to determine what, if any, legal liability may result. Pride’s customers in those jurisdictions could seek to impose penalties or take other actions adverse to Pride’s interests. Ensco and Pride could also face other third-party claims by directors, officers, employees, affiliates, advisors, attorneys, agents, stockholders, debt holders, or other interest holders or constituents of Pride. For additional information regarding a stockholder demand letter and related derivative actions, please see “— Demand Letter and Derivative Cases.”

 

Environmental Matters.  Pride is currently subject to pending notices of assessment issued from 2002 to 2010 pursuant to which governmental authorities in Brazil are seeking fines in an aggregate amount of approximately $1.4 million, based on exchange rates as of December 31, 2010, for releases of drilling fluids from rigs operating offshore Brazil. Pride is contesting these notices, intends to defend itself vigorously and, based on the information available to Pride at this time, it does not expect the outcome of these assessments to have a material adverse effect on its financial position, results of operations or cash flows; however, there can be no assurance as to the ultimate outcome of these assessments. As of December 31, 2010, Pride has an accrual of $1.4 million for potential liability related to these matters.

 

Pride is currently subject to a pending administrative proceeding initiated in July 2009 by a governmental authority of Spain pursuant to which such governmental authority is seeking payment in an aggregate amount of approximately $4.0 million for an alleged environmental spill originating from the Pride North America while it was operating offshore Spain. Pride expects to be indemnified for any payments resulting from this incident by its client under the terms of the drilling contract. The client has posted guarantees with the Spanish government to cover potential penalties. In addition, a criminal investigation of the incident was initiated by a prosecutor in Tarragona, Spain in July 2010, and the administrative proceedings have been suspended pending the outcome of this investigation. Pride does not know at this time what, if any, involvement it may have in this investigation. Pride intends to defend itself vigorously in the administrative proceeding and any criminal investigation of it and, based on the information available to us at this time, it does not expect the outcome of the proceedings to have a material adverse effect on its financial position, results of operations or cash flows; however, there can be no assurance as to the ultimate outcome of the proceedings.

Demand Letter and Derivative Cases.  In June 2009, Pride received a demand letter from counsel representing Kyle Arnold stating that Mr. Arnold is one of its stockholders and that he believes that certain of our current and former officers and directors violated their fiduciary duties related to the issues described above under “— FCPA Investigation.” The letter requests that Pride’s board of directors take appropriate action against the individuals in question. In September 2009, in response to this letter, Pride’s board of directors formed a special committee, which retained independent counsel to advise it.

 

On April 14, 2010, Edward Ferguson, a purported stockholder of Pride, filed a derivative action in the state court of Harris County, Texas against all of Pride’s current directors and Pride, as nominal defendant, alleging that the individual defendants breached their fiduciary duties to Pride related to the issues described above under “— FCPA Investigation.” Among other remedies, the lawsuit seeks damages in an unspecified amount and equitable relief against the individual defendants, along with an award of attorney fees and other costs and expenses to the plaintiff. On April 15, 2010, Lawrence Dixon, another purported stockholder, filed a substantially similar lawsuit in the state court of Harris County, Texas against the same defendants. These two lawsuits have been consolidated. The parties agreed to a deferral of the matter to await further developments in the FCPA investigation. After the conclusion of that investigation (see “— FCPA Investigation”), the plaintiffs filed a consolidated amended petition on January 18, 2011, raising allegations substantially similar to those made in the prior lawsuits. On February 9, 2011, the plaintiffs filed a further amendment to their petition adding claims relating the pending merger of Ensco and Pride. For additional information regarding the amendment, see “— Terms of the Pending Merger with Pride — Legal Proceedings Related to the Pending Merger with Pride.”

 

In December 2010, the special committee completed its evaluation of the issues surrounding the FCPA investigation. The committee analyzed the issues raised by the demand letter and the then pending lawsuits and conducted its own investigation into the matter. The committee concluded that it was not in the interest of Pride or its stockholders to pursue litigation related to the matter. These conclusions were summarized for Pride’s board of directors in December 2010. On January 28, 2011, the special committee met and evaluated whether the allegations raised in the amended petition in the Ferguson matter filed on January 18, 2011 raised any issues that would alter its conclusion. The committee determined that the new filing did not alter its conclusion that litigation of these matters was not in the interest of Pride or its stockholders and that such litigation should not be pursued.

 

Other.  Pride is routinely involved in other litigation, claims and disputes incidental to its business, which at times involve claims for significant monetary amounts, some of which would not be covered by insurance. In the opinion of Pride’s management, none of the existing litigation will have a material adverse effect on Pride’s financial position, results of operations or cash flows. However, a substantial settlement payment or judgment in excess of Pride’s accruals could have a material adverse effect on its financial position, results of operations or cash flows.

 

Terms of the Pending Merger with Pride

 

The following is a summary of certain provisions of the agreement and plan of merger among Ensco, Pride, Ensco Delaware and Merger Sub. This summary is qualified in its entirety by reference to the merger agreement, which we urge you to read carefully for more details regarding the provisions we describe below and for other provisions that may be important to you.

 

Overview

 

On February 6, 2011, Ensco entered into an agreement and plan of merger with Pride, Ensco Delaware, and Merger Sub. Pursuant to the merger agreement, Merger Sub will merge with and into Pride, with Pride as the surviving entity and an indirect, wholly-owned subsidiary of Ensco. The merger agreement and the merger have been approved by the respective boards of directors of Ensco and Pride. Consummation of the merger is subject to the approval of the shareholders of Ensco and the stockholders of Pride, regulatory approvals and the satisfaction or waiver of various other conditions as more fully described in the merger agreement. Subject

to receipt of required approvals, it is anticipated that the closing of the merger will occur in the second quarter of 2011.

 

We anticipate that approximately $2.9 billion will be required to pay the aggregate cash portion of the merger consideration to the Pride stockholders, assuming Pride stock option awards are exercised prior to or contemporaneously with the completion of the merger. On February 6, 2011, we entered into a bridge commitment letter with DBCI, Deutsche Bank Securities Inc. and Citi. Pursuant to the commitment letter, DBCI and Citi have committed to provide a $2.75 billion unsecured bridge term loan facility to fund a portion of the cash consideration in the merger. The size of the bridge term loan facility will be reduced by the aggregate net proceeds of this offering. The bridge term loan facility will mature 364 days after closing. The commitment is subject to various conditions, including the absence of a material adverse effect on Pride or Ensco, the maintenance of investment grade credit ratings, the execution of satisfactory documentation and other customary closing conditions. We currently expect to use the proceeds of this offering, cash on hand and, if necessary, the bridge term loan facility to fund the cash component of the merger consideration. Ensco may seek additional sources of debt financing in the future to reduce or replace the bridge term loan facility. There can be no assurance that any additional sources of debt financing may be completed on commercially acceptable terms if at all.

 

Purchase Price

 

If the merger is completed, with exceptions for certain U.K. residents, for each share of Pride common stock, Ensco will issue and deliver to Pride stockholders 0.4778 ADSs each whole ADS representing one Class A ordinary share of Ensco, nominal value $0.10 per share, and will pay $15.60 in cash. Under certain circumstances, U.K. residents may receive all cash consideration as a result of compliance with legal requirements. Based on the closing price of $54.41 per Ensco ADS on February 4, 2011, the last trading day before the public announcement of the execution and delivery of the merger agreement by Ensco and Pride, the aggregate value of the merger consideration to be received by Pride stockholders was estimated to be approximately $7.7 billion. This merger consideration consists of approximately $2.9 billion to be paid in cash and approximately $4.8 billion to be paid through the issuance of approximately 88 million Ensco ADSs based on the number of outstanding shares of Pride common stock, assuming all Pride stock option awards are exercised prior to or contemporaneously with the completion of the merger. The market value of the merger consideration ultimately received by Pride stockholders will depend on the closing price of Ensco ADSs on the day that the merger is consummated.

 

Conditions to the Completion of the Merger

 

A number of conditions must be satisfied or, where legally permissible, waived before the proposed merger can be consummated. These include, among others:

 

 

 

Neither Ensco nor Pride can give any assurance as to when or if all of the conditions to the consummation of the merger will be satisfied or waived or that the merger will occur.

 

Regulatory Approvals Required for the Merger

 

The merger is subject to review by the Antitrust Division of the U.S. Department of Justice, which is referred to as the Antitrust Division, under the HSR Act. Under the HSR Act, Ensco and Pride are required to make premerger notification filings and to await the expiration or early termination of the statutory waiting period (and any extension of the waiting period) prior to completing the merger. On February 28, 2011, Ensco and Pride each filed a Premerger Notification and Report Form with the Antitrust Division and the Federal Trade Commission, which is referred to as the FTC. By agreement between the two agencies, the Department of Justice is conducting the review. Also, on February 11, 2011, the Antitrust Division notified Ensco and Pride by telephone that it was conducting an investigation into the background of the transaction and requested a voluntary submission of information and documents to assist in the evaluation of the likely competitive effects of the proposed transaction.

 

The merger is also subject to antitrust review by government authorities in Brazil, which does not require governmental approval prior to the closing of the transaction. Thus, approval under the HSR Act is the only remaining regulatory approval that is likely to be required prior to closing.

 

Termination of the Merger Agreement

 

In general, the merger agreement may be terminated at any time prior to the effective time of the merger in the following ways:

 

 

 

 

 

 

 

Legal Proceedings Related to the Pending Merger with Pride

 

On February 9, 2011, the plaintiffs in a derivative class action lawsuit related to Pride’s previously disclosed FCPA investigation filed an amendment to their petition adding claims related to the merger. See “— Legal Proceedings — FCPA Investigation” for a discussion of the FCPA investigation. In the amendment, the plaintiffs contend that the proposed merger was motivated by a desire to extinguish Pride’s alleged liability related to the derivative action. The plaintiffs also contend that the proposed merger does not provide fair value to Pride’s stockholders, and that various provisions of the merger agreement are improperly designed to prevent any competing bids. The plaintiffs assert claims for breach of fiduciary duty, aiding and abetting such breaches, abuse of control and mismanagement. They contend that their breach of fiduciary duty claim with respect to the proposed merger should be certified as a class action, that the merger agreement should be declared unenforceable, and that the proposed merger should be enjoined. The plaintiffs seek unspecified damages and other relief as well.

 

On February 9, 2011, Cary Abrams, a purported stockholder of Pride, filed a class action petition in state court in Harris County, Texas requesting temporary and permanent injunctive relief enjoining the merger and rescission of the merger if consummated. On February 10, 2011, Astor BK Realty Trust, another purported stockholder of Pride, filed a substantially similar lawsuit in Harris County, Texas. The lawsuits allege that all of Pride’s current directors breached their fiduciary duties by agreeing to inadequate consideration for Pride’s stockholders and by approving a merger agreement that includes deal protection devices allegedly designed to ensure that Pride will not receive a superior offer. The lawsuits also allege that Pride and Ensco aided and abetted the directors in the breaches of their fiduciary duties. The plaintiffs seek unspecified damages and other relief as well.

 

On February 10, 2011, Saratoga Advantage Trust, a purported stockholder of Pride, filed a class action complaint in the Delaware Court of Chancery seeking preliminary and permanent injunctive relief enjoining the merger. On February 17, 2011, Elizabeth Wiggs-Jacques, another purported stockholder of Pride, filed a

substantially similar lawsuit in the Delaware Court of Chancery. On March 1, 2011, Barry Smith, another purported stockholder of Pride, filed a substantially similar suit in the Delaware Court of Chancery. The plaintiffs allege that all of Pride’s current directors breached their fiduciary duties by approving the merger agreement because it provides inadequate consideration to Pride’s stockholders and contains provisions designed to ensure that Pride will not receive a competing superior proposal. The plaintiffs also allege that Pride and Ensco aided and abetted the directors in purportedly breaching their fiduciary duties. In addition, the plaintiffs seek rescission of the merger should it be consummated, as well as other unspecified equitable relief.

 

Pride, Pride’s directors, Ensco, and Merger Sub believe that the claims stated in the complaints relating to the merger are all without merit, and they intend to defend such actions vigorously.

 

We estimate that the net proceeds from the sale of the notes will be approximately $2,444.0 million after deducting the underwriting discounts and commissions and estimated offering expenses payable by us. We intend to use the net proceeds of this offering to fund a portion of the cash consideration payable in connection with the pending merger with Pride. This offering is not conditioned upon the completion of the proposed merger but, in the event that the merger is not consummated or the merger agreement is terminated anytime prior to 5:00 p.m., New York City time, on February 3, 2012, we will be required to redeem all of the notes then outstanding at the redemption prices described in “Description of Notes — Special Mandatory Redemption.” There can be no assurance that the merger will be consummated. We may temporarily invest the net proceeds in short-term, liquid investments until they are used for their stated purpose.

 

The following table sets forth our consolidated cash and cash equivalents and our capitalization as of December 31, 2010:

 

 

You should read this table in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and the related notes to those financial statements appearing in our annual report on Form 10-K for the year ended December 31, 2010, which is incorporated by reference into this prospectus supplement and the accompanying prospectus.

 

The capitalization table below is not necessarily indicative of our future capitalization or financial condition.

 

 

 

 

The following table sets forth our ratio of earnings to fixed charges for the periods indicated (1) on a consolidated historical basis and (2) on a pro forma adjusted basis to give effect to (i) the completion of this offering, (ii) the completion of the merger under the assumptions described under “Unaudited Pro Forma Condensed Combined Financial Statements,” and (iii) our application of the estimated proceeds from this offering in the manner described in “Use of Proceeds.”

 

 

 

 

These ratios were computed by dividing earnings by fixed charges. For this purpose, earnings consist of income from continuing operations before income taxes, fixed charges and amortization of capitalized interest, less income from continuing operations before income taxes attributable to noncontrolling interests and interest capitalized. Fixed charges consist of interest expensed and capitalized and estimates of interest within rental expense.

 

The following tables show Ensco’s selected historical financial data as of and for each of the fiscal years ended December 31, 2010, 2009, 2008, 2007 and 2006 and were derived from Ensco’s financial statements. You should read the following data in connection with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the consolidated financial statements and the related notes thereto set forth in Ensco’s Annual Report on Form 10-K for the year ended December 31, 2010, which is incorporated herein by reference. See also “Unaudited Pro Forma Condensed Combined Financial Statements.” Ensco’s historical results are not necessarily indicative of results to be expected in future periods.

 

 

 

The following tables show Pride’s selected historical financial data as of and for each of the fiscal years ended December 31, 2010, 2009, 2008, 2007 and 2006 derived from Pride’s audited consolidated financial statements. Pride has previously reclassified the historical results of operations of its former Latin America Land and E&P Services segments, three tender assist rigs, Pride’s former Eastern Hemisphere land rig operations, and Pride’s former mat-supported jackup business, to discontinued operations. See Note 2 to Pride’s audited consolidated financial statements. You should read the following data in connection with the consolidated financial statements of Pride and its subsidiaries and the related notes thereto set forth in the Current Report on Form 8-K of Ensco plc filed on March 8, 2011, which is incorporated herein by reference. See also “Unaudited Pro Forma Condensed Combined Financial Statements” regarding the pending merger. Pride’s historical results are not necessarily indicative of results to be expected in future periods.

 

 

On February 6, 2011, Ensco and Pride entered into a merger agreement pursuant to which, subject to the conditions set forth therein, a wholly-owned subsidiary of Ensco will merge with and into Pride, with Pride as the surviving entity and an indirect, wholly-owned subsidiary of Ensco. Pursuant to the merger agreement, at closing each outstanding share of Pride’s common stock will be converted into the right to receive $15.60 in cash and 0.4778 Ensco ADSs. Under certain circumstances, UK residents may receive all cash consideration as a result of compliance with legal requirements. The merger will be accounted for using the acquisition method of accounting with Ensco identified as the acquirer. Under the acquisition method of accounting, Ensco will record all assets acquired and liabilities assumed at their respective acquisition-date fair values at the effective time of closing.

 

Basis of Pro Forma Presentation

 

The following unaudited pro forma condensed combined financial statements and related notes combine the historical consolidated balance sheet and statement of income of Ensco and of Pride. The pro forma balance sheet gives effect to the merger as if the merger had occurred on December 31, 2010 and this offering and the application of the estimated proceeds from this offering in the manner described in “Use of Proceeds” as if this offering was completed on December 31, 2010. The pro forma statement of income for the year ended December 31, 2010 gives effect to (i) the completion of this offering, (ii) the merger as if the merger had occurred on January 1, 2010 and (iii) the application of the estimated proceeds from this offering in the manner described in “Use of Proceeds” as if this offering was completed on January 1, 2010. The pro forma statement of income for the year ended December 31, 2010 was prepared by combining Ensco’s historical consolidated statement of income for the year ended December 31, 2010 and Pride’s historical consolidated statement of income for the year ended December 31, 2010.

 

The unaudited pro forma condensed combined financial statements are provided for illustrative purposes only and are not intended to represent or be indicative of the consolidated results of operations or financial position of the combined company that would have been recorded had the merger been completed as of the dates presented and should not be taken as representative of future results of operations or financial position of the combined company. The unaudited pro forma condensed combined financial statements do not reflect the impacts of any potential operational efficiencies, cost savings or economies of scale that Ensco may achieve with respect to the combined operations of Ensco and Pride. Additionally, the pro forma statement of income does not include non-recurring charges or credits and the related tax effects which result directly from the transaction. Furthermore, certain reclassifications have been made to Pride’s historical financial statements presented herein to conform to Ensco’s historical presentation.

 

The unaudited pro forma condensed combined financial statements reflect the estimated merger consideration expected to be transferred, which does not purport to represent what the actual merger consideration transferred will be at the effective time of the closing. In accordance with FASB ASC Topic 805, Business Combinations, as amended (“FASB ASC Topic 805”), the fair value of equity securities issued as part of the consideration transferred will be measured on the closing date of the merger at the then-current market price. Ensco has estimated the total consideration expected to be issued and paid in the merger to be approximately $7.6 billion, consisting of approximately $2.8 billion to be paid in cash, approximately $4.8 billion to be paid through the issuance of approximately 86 million Ensco ADSs valued at the February 25, 2011 closing share price of $55.41 per share and the estimated fair value of $45 million of Pride employee stock options assumed by Ensco, based on the assumption that no Pride employee stock options are exercised prior to the merger closing.

 

The cash portion of the merger consideration is expected to be financed through the net proceeds of this offering, existing cash and cash equivalents and additional debt financings. Additional debt financings may include a combination of issuances of debt securities, borrowings under Ensco’s credit facility, borrowings under an unsecured bridge term loan facility or other future financing arrangements. Pro forma interest expense assumes our additional debt financings were outstanding for the full year with an estimated weighted-

average interest rate of 4.3%. A 0.125% change in the estimated interest rate would have a corresponding effect of $4 million on interest expense for the year ended December 31, 2010.

 

Under FASB ASC Topic 805, acquisition-related transaction costs (i.e., advisory, legal, valuation and other professional fees) are not included as a component of consideration transferred but are accounted for as expenses in the periods in which the costs are incurred. Ensco estimates that advisory, legal, valuation, and other professional fees and expenses will total approximately $31 million, debt issuance costs will total approximately $20 million, ADS issuance costs will total approximately $70 million and change in control severance for certain Pride employees will total approximately $38 million. Professional fees and expenses incurred by Pride related to the transaction are estimated to total approximately $48 million. Moreover, retention awards in the form of non-vested shares were granted in February 2011 to officers and certain key employees of Ensco with a total grant-date fair value of $22 million. This amount will be recognized as compensation expense on a straight-line basis over a three-year period, the non-recurring effect of which is not included in the unaudited pro forma condensed combined financial statements. After closing, Ensco expects to incur additional charges and expenses related to restructuring and integrating the operations of Pride and Ensco, the amount of which has not yet been determined.

 

As of the date of this prospectus supplement, the assets and liabilities of Pride are recorded at their preliminary estimated fair values at the assumed date of completion of the merger, with the excess of the purchase price over the sum of these fair values recorded as goodwill. The preliminary estimates of fair values are subject to change based on the fair values and the final valuations that will be determined as of the closing date of the merger. Actual results will differ from this unaudited pro forma condensed combined financial information once Ensco has determined the final merger consideration and completed the detailed valuation analysis and calculations necessary to finalize the required purchase price allocations. Accordingly, the final allocations of merger consideration and their effects on our results of operations may differ materially from the preliminary allocations and unaudited pro forma combined amounts included herein.

 

The unaudited pro forma condensed combined financial statements do not constitute statutory accounts required by the U.K. Companies Act 2006, which for the year ended December 31, 2010 will be prepared in accordance with generally accepted accounting principles in the U.K. and delivered to the Registrar of Companies in the U.K. following the annual general meeting of shareholders. The U.K. statutory accounts are expected to include an unqualified auditor’s report, which is not expected to contain any references to matters to which the auditors drew attention by way of emphasis without qualifying the report or any statements under Sections 498(2) or 498(3) of the U.K. Companies Act 2006.

 

The unaudited pro forma condensed combined financial statements should be read in conjunction with our historical consolidated financial statements and accompanying notes contained in our Annual Report on Form 10-K and the consolidated financial statements of Pride and its subsidiaries and the accompanying notes set forth in our Current Report on Form 8-K filed on March 8, 2011.

ENSCO PLC AND SUBSIDIARIES

UNAUDITED PRO FORMA CONDENSED COMBINED BALANCE SHEET
AS OF DECEMBER 31, 2010

 

 

See Notes to Unaudited Pro Forma Condensed Combined Financial Statements

ENSCO PLC AND SUBSIDIARIES

UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF INCOME
FOR THE YEAR ENDED DECEMBER 31, 2010

 

 

See Notes to Unaudited Pro Forma Condensed Combined Financial Statements

ENSCO PLC AND SUBSIDIARIES

 

NOTES TO UNAUDITED PRO FORMA CONDENSED COMBINED

FINANCIAL STATEMENTS

 

 

The unaudited pro forma condensed combined consolidated financial statements were prepared in accordance with Securities and Exchange Commission Regulation S-X Article 11, using the acquisition method of accounting in accordance with FASB ASC Topic 805 and are based on the historical financial statements of Ensco and Pride as of and for the year ended December 31, 2010 after giving effect to the consideration paid by Ensco to consummate the merger and related financing, as well as pro forma adjustments.

 

FASB ASC Topic 805 requires, among other things, that most assets acquired and liabilities assumed be recognized at their fair values, as determined in accordance with FASB ASC Topic 820, Fair Value Measurements (“FASB ASC Topic 820”), as of the acquisition date. In addition, FASB ASC Topic 805 establishes that the consideration transferred be measured at the closing date of the acquisition at the then-current market price, which may be different than the amount of consideration disclosed in these unaudited pro forma condensed combined consolidated financial statements.

 

FASB ASC Topic 820 defines the term “fair value” and sets forth the valuation requirements for any asset or liability measured at fair value and specifies a hierarchy of valuation techniques based on the nature of the inputs used to develop the fair value measures. Fair value is defined by FASB ASC Topic 820 as “the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.” This is an exit price concept for the valuation of the asset or liability and market participants are assumed to be buyers and sellers in the principal (or the most advantageous) market for the asset or liability. Fair value measurements for an asset assume the highest and best use by these market participants. As a result of these standards, Ensco may be required to record assets which are not intended to be used or sold and/or to value assets at fair value measures that do not reflect Ensco’s intended use of those assets. Many of these fair value measurements can be highly subjective, and it is also possible that other professionals, applying reasonable judgment to the same facts and circumstances, could develop and support a range of alternative estimated amounts.

 

Under the acquisition method of accounting, the assets acquired and liabilities assumed will be recorded as of the completion of the acquisition, primarily at their respective fair values and added to those of Ensco. Financial statements and reported results of operations of Ensco issued after completion of the acquisition will reflect these values, but will not be retroactively restated to reflect the historical financial position or results of operations of Pride.

 

Under FASB ASC Topic 805, acquisition-related transaction costs (i.e., advisory, legal, valuation and other professional fees) and certain acquisition-related restructuring charges impacting the target company are expensed in the period in which the costs are incurred.

 

 

The unaudited pro forma financial information has been compiled in a manner consistent with the accounting policies of Ensco. Certain reclassifications have been made to Pride’s historical financial statements presented herein to conform to Ensco’s historical presentation.

 

 

The estimated merger consideration is expected to total approximately $7.6 billion based on Ensco’s share price of $55.41, which is the closing price of Ensco ADSs traded on the New York Stock Exchange on February 25, 2011 assuming no exercise of any options to purchase Pride common stock prior to completion of the merger and that all such options are assumed by Ensco. The value of the merger consideration will

ENSCO PLC AND SUBSIDIARIES

 

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FINANCIAL STATEMENTS — (Continued)

 

fluctuate based upon changes in the price of shares of Ensco and the number of Pride common shares and options outstanding at the closing date.

 

The following table summarizes the components of the estimated merger consideration (dollars in millions, except per share amounts):

 

 

The cash portion of the merger consideration is expected to be financed through existing cash and cash equivalents, the net proceeds of this offering and additional debt financings. Additional debt financings may include a combination of issuances of debt securities, borrowings under Ensco’s credit facility, borrowings under an unsecured bridge term loan facility or other future financing arrangements.

 

The table below illustrates the potential impact to the estimated merger consideration payable resulting from a 10% increase or decrease in the price of Ensco’s share price as of February 25, 2011 of $55.41. For the purpose of this calculation, the total number of shares has been assumed to be the same as in the table above (in millions).

 

 

The estimated goodwill included in the pro forma adjustments is calculated as the difference between the estimated merger consideration expected to be transferred and the estimated fair values assigned to the assets acquired and liabilities assumed. The following table summarizes the estimated goodwill calculation as of December 31, 2010 (in millions):

 

 

This preliminary allocation of the merger consideration is based upon management’s estimates, judgments and assumptions. These estimates, judgments and assumptions are subject to change upon final valuation and

ENSCO PLC AND SUBSIDIARIES

 

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FINANCIAL STATEMENTS — (Continued)

 

should be treated as preliminary values. The final allocation of consideration will include changes in (1) Ensco’s share price, (2) estimated fair values of property and equipment, (3) allocations to intangible assets and liabilities and (4) other assets and liabilities. Therefore, actual results may differ once Ensco has determined the final merger consideration and completed the detailed valuation analysis and calculations necessary to finalize the required purchase price allocations. Accordingly, the final allocations of merger consideration, which will be determined subsequent to the closing of the merger, may differ materially from the estimated allocations and unaudited pro forma combined amounts included herein.

 

 

(a) Cash and cash equivalents — Represents the pro forma adjustments to cash and cash equivalents as follows (in millions):

 

 

(b) Accounts receivable, net — Represents the pro forma adjustments to record the estimated fair value of trade and other current receivables.

 

(c) Other current assets — Represents the pro forma adjustments to record the estimated fair value of other current assets as follows (in millions):

 

 

(d) Property and equipment, net — Represents the pro forma adjustments to historical amounts to record the estimated fair value of property and equipment, net.

 

(e) Goodwill and other intangible assets — Represents the pro forma adjustments to record the estimated fair value of goodwill and other intangible assets as follows (in millions):

 

 

The pro forma adjustment to record the estimated fair value of Pride drilling contracts represents the estimated fair market value adjustment for firm drilling contracts in place at the pro forma balance sheet date. The various factors considered in the pro forma adjustment are (1) the contracted day rate for each contract, (2) the remaining term of each contract, (3) the rig class and (4) the market conditions for each respective rig class at the pro forma balance sheet date. The calculated amount is subject to change based on contract positions and market conditions at the closing date of the merger. This balance will be amortized to operating revenues over the respective remaining contract terms on a straight-line basis.

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FINANCIAL STATEMENTS — (Continued)

 

(f) Other assets, net — Represents the pro forma adjustments to record the estimated fair value of other assets as follows (in millions):

 

 

(g) Accounts payable and accrued liabilities and other — Represents the pro forma adjustments to record the estimated fair value of current liabilities associated with the merger as follows (in millions):

 

 

(h) Long-term debt — Represents the pro forma adjustments to adjust Pride’s debt to its estimated fair value and record Ensco’s estimated debt financing associated with the merger as follows (in millions):

 

 

(i) Deferred income tax liabilities — Represents the pro forma adjustment to record the estimated incremental deferred income taxes, which reflects the tax effect of the difference between the preliminary fair value of Pride’s assets, other than goodwill, and liabilities recorded under the acquisition method of accounting and the carryover tax basis of those assets and liabilities.

 

(j) Other liabilities — Represents the pro forma adjustments to record the estimated fair value of other liabilities as follows (in millions):

 

 

The pro forma adjustment to record the estimated fair value of Pride drilling contracts represents the estimated fair market value adjustment for firm drilling contracts in place at the pro forma balance sheet date. The various factors considered in the pro forma adjustment are (1) the contracted day rate for each contract, (2) the remaining term of each contract, (3) the rig class and (4) the market conditions for each respective rig class at the pro forma balance sheet date. The calculated amount is subject to change based on contract positions and market conditions on the closing date of the merger. This balance will be amortized to operating revenues over the respective remaining contract terms on a straight-line basis.

ENSCO PLC AND SUBSIDIARIES

 

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FINANCIAL STATEMENTS — (Continued)

 

(k) Total equity — Represents the pro forma adjustments as follows (in millions):

 

 

(l) Operating revenues — Represents the pro forma adjustments for the amortization of intangible assets and liabilities associated with the estimated fair value of Pride drilling contracts.

 

(m) Depreciation — Represents the pro forma adjustment for depreciation of Pride’s drilling rigs and equipment. Pride’s property and equipment consists primarily of drilling rigs and related equipment. The pro forma depreciation adjustment relates to the pro forma adjustment to record the estimated fair value of Pride’s drilling rigs and related equipment after conforming depreciable lives and salvage values and computing depreciation using the straight-line method. Ensco estimated remaining useful lives for Pride’s drilling rigs ranged from 15 to 30 years based on original estimated useful lives of 30 years, consistent with Ensco’s accounting policies.

 

(n) Other income (expense), net — Represents the pro forma adjustments for incremental interest expense incurred on the estimated financing to be obtained by Ensco to fund the merger for the year ended December 31, 2010 as follows (in millions):

 

 

The pro forma adjustment for incremental interest expense incurred assumes our additional debt issued was outstanding for the full year with an estimated weighted-average interest rate of 4.3%. A 0.125% change in the estimated interest rate would have a corresponding effect of $4 million on interest expense for the year ended December 31, 2010.

 

(o) Provision for income taxes — Represents the incremental income tax provision associated with Ensco’s pro forma adjustments.

 

(p) The following is a reconciliation of pro forma income from continuing operations attributable to Ensco shares (in millions):

 

 

(q) Earnings per share — Pro forma adjustment to reflect the effect of Ensco ADSs issued to Pride stockholders in connection with the merger.

ENSCO PLC AND SUBSIDIARIES

 

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FINANCIAL STATEMENTS — (Continued)

 

(r) Weighted — average shares outstanding — Represents pro forma adjustments as follows (in millions):

 

 

As of December 31, 2010, we had outstanding:

 

 

Additionally, we have an amended and restated credit agreement (the “2010 Credit Facility”) with a syndicate of banks that provides for a $700.0 million unsecured revolving credit facility for general corporate purposes.

 

As of December 31, 2010, Pride had outstanding:

 

 

These notes will remain outstanding following the consummation of the merger.

 

Ensco Debentures Due 2027

 

In November 1997, Ensco Delaware issued $150.0 million of unsecured 7.20% Debentures due November 15, 2027 (the “Debentures”) in a public offering. Interest on the Debentures is payable semiannually in May and November and may be redeemed at any time at our option, in whole or in part, at a price equal to 100% of the principal amount thereof plus accrued and unpaid interest, if any, and a make-whole premium. The indenture under which the Debentures were issued contains limitations on the incurrence of indebtedness secured by certain liens and limitations on engaging in certain sale/leaseback transactions and certain merger, consolidation or reorganization transactions. The Debentures are not subject to any sinking fund requirements. In December 2009, in connection with the redomestication, Ensco plc entered into a supplemental indenture to unconditionally guarantee the principal and interest payments on the Debentures.

 

Ensco MARAD Bonds Due 2015 and 2020

 

In January 2001, a subsidiary of Ensco Delaware issued $190.0 million of 15-year bonds to provide long-term financing for ENSCO 7500. The bonds will be repaid in 30 equal semiannual principal installments of $6.3 million ending in December 2015. Interest on the bonds is payable semiannually, in June and December, at a fixed rate of 6.36%. In October 2003, a subsidiary of Ensco Delaware issued $76.5 million of 17-year bonds to provide long-term financing for ENSCO 105. The bonds will be repaid in 34 equal semiannual principal installments of $2.3 million ending in October 2020. Interest on the bonds is payable semiannually, in April and October, at a fixed rate of 4.65%. Both bond issuances are guaranteed by the United States of America, acting by and through MARAD, and Ensco Delaware issued separate guaranties to MARAD, guaranteeing the performance of obligations under the bonds. In February 2010, the documents governing MARAD’s guarantee commitments were amended to address certain changes arising from the redomestication and to include Ensco plc as an additional guarantor of the debt obligations.

 

Ensco Revolving Credit Facility

 

On May 28, 2010, we entered into the 2010 Credit Facility with a syndicate of banks that provides for a $700.0 million unsecured revolving credit facility for general corporate purposes. The 2010 Credit Facility has a four-year term, expiring in May 2014, and replaced our $350.0 million five-year credit agreement which was scheduled to mature in June 2010. Advances under the 2010 Credit Facility generally bear interest at LIBOR plus an applicable margin rate (currently 2.0% per annum), depending on our credit rating. We are required to

pay an annual undrawn facility fee (currently .25% per annum) on the total $700.0 million commitment, which is also based on our credit rating. We also are required to maintain a debt to total capitalization ratio less than or equal to 50% under the 2010 Credit Facility. We have the right, subject to lender consent, to increase the commitments under the 2010 Credit Facility up to $850.0 million. We had no amounts outstanding under the 2010 Credit Facility as of December 31, 2010. Ensco currently is engaged in discussions with a syndicate of banks regarding the possibility of both entering into a new revolving credit facility and increasing the amount of the commitments under the 2010 Credit Facility. We can make no assurances that any new credit facility or any increase under the 2010 Credit Facility may be completed on commercially acceptable terms if at all.

 

Pride Senior Notes Due 2019

 

On June 2, 2009, Pride completed an offering of $500.0 million aggregate principal amount of 81/2% Senior Notes due 2019 (the “2019 notes”). The 2019 notes bear interest at 8.5% per annum, payable semiannually. The 2019 notes contain provisions that limit Pride’s ability and the ability of Pride’s subsidiaries, with certain exceptions, to engage in sale and leaseback transactions, create liens and consolidate, merge or transfer all or substantially all of its assets. The 2019 notes are subject to redemption, in whole or in part, at Pride’s option at any time at a redemption price equal to the principal amount of the notes redeemed plus a make-whole premium. Pride will also pay accrued but unpaid interest to the redemption date.

 

Pride Senior Notes Due 2020 and 2040

 

On August 6, 2010, Pride completed an offering of $900.0 million aggregate principal amount of its 67/8% Senior Notes due 2020 (the “2020 notes”) and $300.0 million aggregate principal amount of its 77/8% Senior Notes due 2040 (the “2040 notes”). The 2020 notes and the 2040 notes bear interest at 6.875% and 7.875%, respectively, per annum, payable semiannually. The 2020 notes and 2040 notes contain provisions that limit Pride’s ability and the ability of its subsidiaries, with certain exceptions, to engage in sale and leaseback transactions, create liens and consolidate, merge or transfer all or substantially all of its assets. Upon a specified change in control event that results in a ratings decline, Pride will be required to make an offer to repurchase the 2020 notes and the 2040 notes at a repurchase price of 101% of the principal amount of the notes, plus accrued and unpaid interest through the applicable repurchase date. The notes of each series are subject to redemption, in whole at any time or in part from time to time, at Pride’s option, at a redemption price equal to the principal amount of the notes redeemed plus a make-whole premium. Pride will also pay accrued but unpaid interest to the redemption date.

 

Pride MARAD Notes

 

In November 2006, Pride completed the purchase of the remaining 70% interest in the joint venture entity that owns the Pride Portland and the Pride Rio de Janeiro, which resulted in the addition of approximately $284 million of debt, net of fair value discount, to Pride’s consolidated balance sheet. Repayment of the notes, which were used to fund a portion of the construction costs of the rigs, is guaranteed by MARAD. The notes bear interest at a weighted average fixed rate of 4.33%, mature in 2016 and are prepayable, in whole or in part, subject to a make-whole premium. The notes are collateralized by the two rigs and the net proceeds received by Pride’s subsidiary project companies chartering the rigs.

 

We have summarized selected provisions of each series of the notes below. We will issue the notes under a senior indenture, to be dated as of March 17, 2011, between us and Deutsche Bank Trust Company Americas, as trustee. Each series of the notes will be a separate series of senior debt securities under the indenture. The terms of the notes include those stated in the indenture and those made part of the indentures by reference to the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”). We urge you to read the indenture because it, and not this description, defines your rights as holders of the notes. Copies of the indenture are available as set forth elsewhere in this prospectus supplement under the caption “Where You Can Find More Information; Incorporation by Reference.”

 

As used in this “Description of Notes” section, references to “Ensco,” “we,” “our” or “us” refer solely to Ensco plc and not to any of its Subsidiaries. In addition, we have used in this description capitalized and other terms that we have defined below under “— Definitions” and in other parts of this description.

 

General

 

The 2016 notes will mature on March 15, 2016 and will bear interest at 3.250% per year. The 2021 notes will mature on March 15, 2021 and will bear interest at 4.700% per year. Interest on the notes of each series will accrue from March 17, 2011. We:

 

 

We will issue the notes only in fully registered form, without coupons, in minimum denominations of $2,000 and any integral multiples of $1,000 above that amount.

 

The 2016 notes will be limited initially to $1,000,000,000 in aggregate principal amount, and the 2021 notes will be limited initially to $1,500,000,000 in aggregate principal amount. We may, however, “reopen” each series of the notes and issue an unlimited principal amount of additional notes of that series in the future without the consent of the holders.

 

Special Mandatory Redemption

 

We expect to use all of the net proceeds from this offering as described under “Use of Proceeds” upon the consummation of the merger with Pride. However, the closing of this offering will occur in advance of the expected date of consummation of the merger with Pride.

 

In the event that, for any reason, (i) we do not consummate the merger with Pride prior to 5:00 p.m., New York City time, on February 3, 2012 or (ii) the merger agreement is terminated at any time before such time but after the date which is six months after the Issue Date, we must redeem all of the notes at a redemption price equal to 102% of the aggregate principal amount of the notes, plus accrued and unpaid interest to the Special Mandatory Redemption Date. If the merger agreement is terminated at any time on or before the date which is six months after the Issue Date, we must redeem the notes at a redemption price equal to 101% of the aggregate principal amount of the notes, plus accrued and unpaid interest to the Special Mandatory Redemption Date. “Special Mandatory Redemption Date” means the earlier to occur of (1) March 9, 2012, if the merger has not been consummated prior to 5:00 p.m., New York City time, on February 3, 2012, or (2) the 35th day (or if such day is not a business day, the first business day thereafter) following the termination of the merger agreement for any reason. There can be no assurance that the merger will be consummated.

We will cause the notice of special mandatory redemption to be mailed, with a copy to the trustee, within five days after the occurrence of the event triggering special mandatory redemption to each holder at its registered address. If funds sufficient to pay the special mandatory redemption price of all notes to be redeemed on the Special Mandatory Redemption Date are deposited with the Paying Agent on or before such Special Mandatory Redemption Date, and certain other conditions are satisfied, on and after such Special Mandatory Redemption Date, the notes will cease to bear interest and all rights under the notes shall terminate.

 

Optional Redemption

 

Each series of notes will be redeemable, in whole at any time or in part from time to time, at our option at a redemption price equal to the greater of:

 

(i) 100% of the principal amount of the notes of such series to be redeemed; and

 

(ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon (not including any portion of such payments of interest accrued as of the date of redemption), discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below), plus 20 basis points in the case of the 2016 Notes and plus 25 basis points in the case of the 2021 Notes, plus, in each case, accrued interest thereon to the date of redemption. Notwithstanding the foregoing, installments of interest on a series of notes being redeemed that are due and payable on Interest Payment Dates falling on or prior to a redemption date will be payable on the Interest Payment Date to the registered holders as of the close of business on the relevant record date according to such series of notes and the indenture.

 

“Comparable Treasury Issue” means the United States Treasury security selected by the Quotation Agent as having a maturity comparable to the remaining term of the series of notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such notes.

 

“Comparable Treasury Price” means, with respect to any redemption date, (i) the average of three Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (ii) if we are given fewer than five such Reference Treasury Dealer Quotations, the average of all such quotations, or (iii) if only one Reference Treasury Dealer Quotation is received, such quotation.

 

“Quotation Agent” means the Reference Treasury Dealer appointed by us.

 

“Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Deutsche Bank Securities Inc. (or their respective affiliates that are Primary Treasury Dealers), and a Primary Treasury Dealer (as defined herein) selected by Wells Fargo Securities, LLC and their respective successors and three other nationally recognized investment banking firms that are primary U.S. Government securities dealers specified from time to time by us; provided, however, that if any of the foregoing shall cease to be a primary U.S. Government securities dealer in New York City, which we refer to as a Primary Treasury Dealer, we will substitute therefor another Primary Treasury Dealer.

 

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined by us, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to us by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third business day preceding such redemption date.

 

“Treasury Rate” means, with respect to any redemption date, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such redemption date.

 

Notice of any redemption described under “— Optional Redemption” will be mailed at least 30 days but not more than 60 days before the redemption date to each holder (with a copy to the trustee) of the series of

notes to be redeemed. Unless we default in payment of the redemption price, on and after the redemption date, interest will cease to accrue on the series of notes or portions thereof called for redemption. If less than all of a series of the notes are to be redeemed, the notes to be redeemed shall be selected by lot by The Depository Trust Company, in the case of notes represented by a global security, or by the trustee by a method the trustee deems to be fair and appropriate and in accordance with the procedures of DTC, in the case of notes that are not represented by a global security.

 

We may at any time purchase notes on the open market or otherwise at any price. We will surrender all notes that we redeem or purchase to the trustee for cancellation. We may not reissue or resell any of these notes.

 

Ranking

 

The notes of each series will constitute our senior unsecured debt and will rank equally in right of payment with the other series of notes and with our senior unsecured debt from time to time outstanding and senior in right of payment to any future subordinated debt from time to time outstanding. The notes will be effectively junior to our secured debt from time to time outstanding to the extent of the value of the assets securing that debt.

 

We are a holding company and do not conduct any business operations or have any significant assets other than interests in our Subsidiaries. We currently conduct our operations through both U.S. and foreign Subsidiaries, and our operating income and cash flow are generated by our Subsidiaries. As a result, cash we obtain from our Subsidiaries is the principal source of funds necessary to meet our debt service obligations. Contractual provisions or laws, as well as our Subsidiaries’ financial condition and operating requirements, may limit our ability to obtain cash from our Subsidiaries that we require to pay our debt service obligations, including payments on the notes. The notes will be obligations solely of us and will not be guaranteed by any of our Subsidiaries. Therefore, holders of the notes will have a junior position to the claims of creditors, including trade creditors and tort claimants, of our Subsidiaries with respect to their assets and earnings.