FORM 6-K

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                            Report of Foreign Issuer
                    pursuant to Rule 13a - 16 or 15d - 16 of
                       the Securities Exchange Act of 1934


                         For the period 26 July 2005

                                Cookson Group plc

                          265 Strand, London, WC2R 1BD


     [Indicate by check mark whether the registrant files or will file annual 
      reports under cover Form 20-F or Form 40-F]

               Form 20-F    X                     Form 40-F 

[Indicate by check mark whether the  registrant  by furnishing  the  information
contained  in this  Form is  also  thereby  furnishing  the  information  to the
Commission  pursuant to Rule  12g3-2(b)  under the  Securities  Exchange  Act of
1934.]
                    Yes                                  No      X

[If "Yes" is marked,  indicate below the file number  assigned to the registrant
in connection with Rule 12g3-2(b): 82-]


Exhibit Index

Exhibit No.1 Form 20-F Submitted to UKLA dated 6 June 2005
Exhibit No.2 Director Shareholding dated 8 June 2005
Exhibit No.3 Holding(s) in Company dated 20 June 2005
Exhibit No.4 Holding(s) in Company dated 21 June 2005
Exhibit No.5 Blocklisting Interim Review dated 01 July 2005
Exhibit No.6 Holding(s) in Company dated 15 July 2005
Exhibit No.7 Holding(s) in Company dated 21 July 2005
Exhibit No.8 Restatement of IFRS announcement dated 22 July 2005
Exhibit No.9 Interim Results announcement dated 26 July 2005




Exhibit No.1

6 June 2005
Cookson Group plc - Form 20-F for the fiscal year ended 31 December 2004

Cookson  Group plc  confirms  that two  copies of the above  document  have been
submitted  to the UK  Listing  Authority,  and will  shortly  be  available  for
inspection at the UK Listing  Authority's  Document Viewing  Facility,  which is
situated at:

Financial Services Authority
25 The North Colonnade
Canary Wharf
London
E14 5HS




Exhibit No.2



                                   SCHEDULE 11

       NOTIFICATION OF INTERESTS OF DIRECTORS AND CONNECTED PERSONS

1) Name of company

COOKSON GROUP PLC

2) Name of director

JEFFREY LINDSAY HEWITT

3) Please state whether notification  indicates that it is in respect of holding
of the shareholder  named in 2 above or in respect of a non-beneficial  interest
or in the case of an  individual  holder  if it is a  holding  of that  person's
spouse  or  children  under  the  age of 18 or in  respect  of a  non-beneficial
interest

DIRECTOR NAMED IN 2 ABOVE

4) Name of the registered holder(s) and, if more than one holder, the
number of shares held by each of them (if notified)

JEFFREY L HEWITT

5) Please state whether notification relates to a person(s) connected
with the Director named in 2 above and identify the connected person(s)

N/A

6) Please state the nature of the transaction. For PEP transactions
please indicate whether general/single co PEP and if discretionary/non
discretionary

PURCHASE OF ORDINARY SHARES OF 10 PENCE EACH IN COOKSON GROUP PLC

7) Number of shares/amount of
stock acquired

2,500

8) Percentage of issued class

LESS THAN 0.01%

9) Number of shares/amount
of stock disposed

N/A

10) Percentage of issued class

N/A

11) Class of security

ORDINARY SHARES OF 10 PENCE EACH

12) Price per share

325.50 PENCE PER SHARE

13) Date of transaction

6 JUNE 2005

14) Date company informed

7 JUNE 2005

15) Total holding following this notification

2,500 ORDINARY 10p SHARES

16) Total percentage holding of issued class following this notification

LESS THAN 0.01%

If a director has been granted options by the company please complete the 
following boxes

17) Date of grant


18) Period during which or date on which exercisable


19) Total amount paid (if any) for grant of the option


20) Description of shares or debentures involved: class, number


21) Exercise price (if fixed at time of grant) or indication that price
is to be fixed at time of exercise


22) Total number of shares or debentures over which options held
following this notification



23) Any additional information



24) Name of contact and telephone number for queries

RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC-020 7061 6565

25) Name and signature of authorised company official responsible for
making this notification
RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC

Date of Notification.................................. 8 JUNE 2005



Exhibit No. 3



                                 SCHEDULE 10

                 NOTIFICATION OF MAJOR INTERESTS IN SHARES

1) Name of company

COOKSON GROUP PLC

2) Name of shareholder having a major interest

STANDARD LIFE GROUP

3) Please state whether notification indicates that it is in respect of
holding of the shareholder named in 2 above or in respect of a
non-beneficial interest or in the case of an individual holder if it is a
holding of that person's spouse or children under the age of 18

AS ABOVE

4) Name of the registered holder(s) and, if more than one holder, the
number of shares held by each of them

VIDACOS NOMINEES

5) Number of shares/amount of stock acquired
220,138

6) Percentage of issued class
0.116%

7) Number of shares/amount of stock disposed
N/A
8) Percentage of issued class

N/A

9) Class of security

ORDINARY SHARES OF 10 PENCE EACH

10) Date of transaction

17 JUNE 2005

11) Date company informed

20 JUNE 2005

12) Total holding following this notification

18,997,141 SHARES

13) Total percentage holding of issued class following this notification

10.015%

14) Any additional information

N/A

15) Name of contact and telephone number for queries
RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC - 
TEL: 020 7061 6565

16) Name and signature of authorised company official responsible for
making this notification
RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC
Date of notification: 20 JUNE 2005



Exhibit No.4

                              SCHEDULE 10

                  NOTIFICATION OF MAJOR INTERESTS IN SHARES

1) Name of company

COOKSON GROUP PLC

2) Name of shareholder having a major interest

STANDARD LIFE GROUP

3) Please state whether notification indicates that it is in respect of
holding of the shareholder named in 2 above or in respect of a
non-beneficial interest or in the case of an individual holder if it is a
holding of that person's spouse or children under the age of 18

AS ABOVE

4) Name of the registered holder(s) and, if more than one holder, the
number of shares held by each of them

VIDACOS NOMINEES

5) Number of shares/amount of stock acquired
N/A

6) Percentage of issued class
N/A

7) Number of shares/amount of stock disposed
151,379

8) Percentage of issued class
0.08%

9) Class of security

ORDINARY SHARES OF 10 PENCE EACH

10) Date of transaction

17 JUNE 2005

11) Date company informed

21 JUNE 2005

12) Total holding following this notification

18,845,762 SHARES

13) Total percentage holding of issued class following this notification

9.94%

14) Any additional information

N/A

15) Name of contact and telephone number for queries
RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC -
TEL: 020 7061 6565

16) Name and signature of authorised company official responsible for
making this notification
RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC
Date of notification: 21 JUNE 2005




Exhibit No.5
                                SCHEDULE 5

                    BLOCKLISTING SIX MONTHLY RETURN


1. Name of company

Cookson Group plc

2. Name of scheme

Cookson Group Executive Share Option Schemes

3. Period of return:

From :
01/01/2005
to

30/06/2005

4. Number and class of shares(s)
(amount of stock/debt security)
not issued under scheme

3,060,986 Ordinary 1p shares

5. Number of shares issued/allotted
under scheme during period

1,203,203 Ordinary 1p shares

6. Balance under scheme not yet issued/allotted
at end of period:
before share consolidation

1,857,783 Ordinary 1p shares
after share consolidation
185,778 Ordinary 10p shares


7. Number and class of share(s)
(amount of stock/debt securities)
originally listed and the date of admission

3,500,000 Ordinary 1p shares(March 1998) Ref RA/Cookson Group plc/00001-0002
2,500,000 Ordinary 1p shares(January 2005)
185,778 Ordinary 10p shares(May 2005)

Please confirm total number of shares in issue at the end of the period
in order for us to update our records
189,682,839 Ordinary 10p shares

Contact for queries:
Address:
265 Strand
London
WC2R 1DB
Name:
Rachel Benjamin

Telephone:
020 7061 6565



                                   SCHEDULE 5

                         BLOCKLISTING SIX MONTHLY RETURN


1. Name of company

Cookson Group plc

2. Name of scheme

Cookson Employee Share Savings Scheme

3. Period of return:

From :
01/01/2005
to

30/06/2005

4. Number and class of shares(s)
(amount of stock/debt security)
not issued under scheme

3,064,370 Ordinary 1p shares

5. Number of shares issued/allotted
under scheme during period

158,255 Ordinary 1p shares
Balance under scheme not yet issued/allotted
at end of period:
before share consolidation

2,906,115 Ordinary 1p shares
after share consolidation
290,612 Ordinary 10p shares


Number and class of share(s)
(amount of stock/debt securities)
originally listed and the date of admission

1,500,000 Ordinary 1p shares(February 1996) Ref A/367/1996
2,500,000 Ordinary 1p shares(January 2005)
290,612 Ordinary 10p shares (May 2005)

Please confirm total number of shares in issue at the end of the period
in order for us to update our records
189,682,839 Ordinary 10p shares

Contact for queries:
Address:
265 Strand
London
WC2R 1DB
Name:
Rachel Benjamin

Telephone:
020 7061 6565

                                   SCHEDULE 5

                         BLOCKLISTING SIX MONTHLY RETURN


1. Name of company

Cookson Group plc

2. Name of scheme

Cookson Group US Stock Purchase Plan

3. Period of return:

From :
01/01/2005
to

30/06/2005

4. Number and class of shares(s)
(amount of stock/debt security)
not issued under scheme

4,486,759 Ordinary 1p shares

5. Number of shares issued/allotted
under scheme during period

2,964 Ordinary 1p shares

6. Balance under scheme not yet issued/allotted
at end of period:

before share consolidation

4,483,795 Ordinary 1p shares
after share consolidation
448,379 Ordinary 10p shares

7. Number and class of share(s)
(amount of stock/debt securities)
originally listed and the date of admission

2,500,000 Ordinary 1p shares(January 2004) Ref 3-185-261 (GB0031852618)
2,500,000 Ordinary 1p shares(January 2005)
448,379 Ordinary 10p shares(May 2005)

Please confirm total number of shares in issue at the end of the period
in order for us to update our records
189,682,839 Ordinary 10p shares

Contact for queries:
Address:
265 Strand
London
WC2R 1DB
Name:
Rachel Benjamin

Telephone:
020 7061 6565



Exhibit No.6
                                   SCHEDULE 10

                    NOTIFICATION OF MAJOR INTERESTS IN SHARES

1) Name of company

COOKSON GROUP PLC

2) Name of shareholder having a major interest

STANDARD LIFE GROUP

3) Please state whether notification indicates that it is in respect of
holding of the shareholder named in 2 above or in respect of a
non-beneficial interest or in the case of an individual holder if it is a
holding of that person's spouse or children under the age of 18

AS ABOVE

4) Name of the registered holder(s) and, if more than one holder, the
number of shares held by each of them

VIDACOS NOMINEES

5) Number of shares/amount of stock acquired

400,000

6) Percentage of issued class
0.21%

7) Number of shares/amount of stock disposed
N/A
8) Percentage of issued class

N/A

9) Class of security

ORDINARY SHARES OF 10 PENCE EACH

10) Date of transaction

14 JULY 2005

11) Date company informed

15 JULY 2005

12) Total holding following this notification

19,133,811 SHARES

13) Total percentage holding of issued class following this notification

10.09%

14) Any additional information

N/A

15) Name of contact and telephone number for queries
RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC - 
TEL: 020 7061 6565

16) Name and signature of authorised company official responsible for
making this notification
RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC
Date of notification: 15 JULY 2005



Exhibit No.7
                             SCHEDULE 10

               NOTIFICATION OF MAJOR INTERESTS IN SHARES

1) Name of company

COOKSON GROUP PLC

2) Name of shareholder having a major interest

FMR Corp. & FIDELITY INTERNATIONAL LIMITED

3) Please state whether notification indicates that it is in respect of
holding of the shareholder named in 2 above or in respect of a
non-beneficial interest or in the case of an individual holder if it is a
holding of that person's spouse or children under the age of 18

NON-BENEFICIAL INTEREST

4) Name of the registered holder(s) and, if more than one holder, the
number of shares held by each of them



                                                                              
REGISTERED NAME                       MANAGEMENT COMPANY                     NUMBER OF SHARES
BROWN BROS HARRIMN LTD LUX            FIDELITY INTERNATIONAL LIMITED            6,032,000
NORTHERN TRUST LONDON                 FIDELITY INTERNATIONAL LIMITED               28,000
JP MORGAN, BOURNEMOUTH                FIDELITY INVESTMENT SERVICES LIMITED        787,949
JPMORGAN CHASE BANK                   FMR CORP                                      3,000
JP MORGAN, BOURNEMOUTH                FIDELITY PENSION MANAGEMENT                 431,000
NORTHERN TRUST LONDON                 FIDELITY PENSION MANAGEMENT                  24,000



5) Number of shares/amount of stock acquired

N/A

6) Percentage of issued class

N/A

7) Number of shares/amount of stock disposed

NOT DISCLOSED

8) Percentage of issued class

NOT DISCLOSED

9) Class of security

ORDINARY SHARES OF 10 PENCE EACH

10) Date of transaction

NOT DISCLOSED

11) Date company informed

21 JULY 2005

12) Total holding following this notification

7,305,949 SHARES

13) Total percentage holding of issued class following this notification

3.85%

14) Any additional information
4
15) Name of contact and telephone number for queries
RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC - 
TEL: 020 7061 6565

16) Name and signature of authorised company official responsible for
making this notification
RACHEL BENJAMIN, COMPANY SECRETARIAL ASSISTANT, COOKSON GROUP PLC
Date of notification: 21 JULY 2005





Exhibit No.8

22 July 2005

COOKSON RELEASES 2004 FINANCIAL STATEMENT INFORMATION RESTATED UNDER IFRS

Cookson  Group plc, a leading  materials  science  company,  today  provides  an
unaudited  summary of the  restatement  of its 2004 financial  statements  under
International  Financial  Reporting  Standards  ("IFRS").  This summary is being
provided in advance of the announcement on 26 July of Cookson's  interim results
for  the six  months  ended  30 June  2005.  

As set out in the 18 January 2005 strategy  presentation,  the main changes from
UK GAAP to IFRS that affect Group profit before tax are:

-  discontinuation  of the  amortisation  of goodwill;  
-  accounting  for the costs of  employee  share  options;  
-  reversal  of deferred income on the  close-out of interest rate swaps in 
   prior  periods;  
-  accounting for profits from joint  ventures on the net equity basis.  

The only significant Group balance sheet impacts, apart from re-classifications,
are the accounting for defined benefit pension and other post-retirement schemes
and for  amortisation  of goodwill and the  consequent  impact on  shareholders'
equity.

Cookson Group plc will continue to produce its  company-only  accounts  under UK
GAAP and therefore none of the IFRS adjustments in this  announcement  impact on
its distributable reserves at 31 December 2004, which were GBP97.1m.

There are no IFRS adjustments to Group cash flows,  only  re-classifications  of
items within the cash flow statement.

As noted in the trading update announced on 6 May 2005,  Cookson  considered the
early-adoption  of IAS  39 and  IAS  32,  which  relate  to the  accounting  and
disclosure  of financial  instruments,  but  subsequently  elected not to do so.
These standards are therefore, adopted as from their effective date of 1 January
2005.

The Group's  results for the first half of 2004 and for the full year on an IFRS
and  a   comparative   UK  GAAP  basis  are   summarised  in  the  table  below.
Reconciliations  for each item in the table are provided in the notes  attached.
Detailed reconciliations are provided in the appendix attached.




                                                  Year  -  2004             First Half   -   2004
                                   Notes       IFRS         UK GAAP         IFRS         UK GAAP
                                                                              
Revenue (GBPm)                     1.       1,652.5         1,698.2        816.7           841.5
Trading profit (GBPm)              2.         114.9           119.6         51.9            55.1

Profit before tax (GBPm)
- Headline                         3.          85.0            93.1         37.2            42.0
- Reported                         4.          12.6           (18.7)        24.1             8.0
Earnings per share (pence)
- Headline                         5.          30.1            33.4         12.4            14.3
- Reported                         6.         (11.2)          (26.6)         4.4           (3.7)

Free cash flow (GBPm)              -           51.6            51.6        (21.2)         (21.2)

Net debt (GBPm)                    7.         321.8           306.9        402.0           385.8
Employee Benefits Liability (GBPm) 8.         189.9            29.8        188.8            37.6
Shareholders' Equity (GBPm)        9.         431.4           559.4        458.4           591.6

Trading profit is defined in note 1 of the attached appendix

Under IFRS,  companies  are  required  to reflect the profits of each  reporting
segment  before  Group  corporate  costs.  The table below sets out the relevant
information in respect of trading profit, as defined, and takes into account the
above IFRS adjustments.



                                                       Year - 2004                          First Half - 2004
                                                IFRS             UK GAAP                IFRS              UK GAAP
                                                                                                     
Trading profit (GBPm)

- Ceramics                                      60.0                56.8                27.7                26.0
- Electronics                                   52.8                49.5                24.5                23.2

      Assembly Materials                        24.2                22.2                11.0                10.5
      Chemistry                                 27.8                27.2                12.8                12.1
      Laminates                                  0.8                 0.1                 0.7                 0.6

- Precious Metals                               11.0                 9.3                 3.8                 3.3
- Joint Ventures                                   -                 4.0                   -                 2.6
- Group corporate costs                         (8.9)                n/a                (4.1)                n/a

Group                                          114.9               119.6                51.9                55.1




Shareholder / analyst enquiries:                            Cookson Group plc
Dennis Millard, Group Finance Director                      Tel: 020 7061 6500
Isabel Vilela, Investor Relations Manager


About Cookson Group Cookson Group is a leading  materials  science company which
provides materials,  processes and services to customers worldwide.  The Group's
operations are formed into three divisions - Ceramics,  Electronics and Precious
Metals. The Ceramics division is the world leader in the supply of advanced flow
control and  refractory  products and systems to the iron and steel industry and
is  also a  leading  supplier  of  refractory  lining  materials  for  iron  and
steelmaking  and other  industrial  processes.  The  Electronics  division  is a
leading  manufacturer  and supplier of materials and services to the electronics
industry,  primarily  serving  fabricators  and  assemblers  of printed  circuit
boards,  assemblers of semiconductor packaging and the electrical and industrial
markets.  The Precious  Metals  division is a leading  supplier to the jewellery
industry of fabricated precious metals products.

Headquartered  in London,  Cookson  employs  some 16,000  people in more than 35
countries and sells its products in over 100 countries.

Cookson Group plc, 265 Strand, London WC2R 1DB
Tel: 020 7061 6500 Fax: 020 7061 6600
www.cooksongroup.co.uk

Notes to IFRS Restatement Announcement



                                                                              2004                         2004
                                                                              Year                      First-half
                                                                              GBPm                         GBPm
                                                                                                           
(1) Revenue
Turnover as reported under UK GAAP                                            1,698.2                      841.5
- Revenue of Joint Ventures                                                   (45.2)                       (24.4)
- Adjustment of sales to prior period                                         (0.5)                        (0.4)
Revenue, under IFRS                                                           1,652.5                      816.7

(2) Trading Profit
Operating profit before goodwill amortisation                                                               5.1
and exceptional items as reported under UK GAAP                               119.6                        5
- Profit of JVs before interest and tax                                       (4.0)                        (2.6)
- Pension costs, holiday pay accruals, share option costs, other              (0.7)                        (0.6)
Trading Profit, under IFRS                                                    114.9                        51.9

(3) Profit before tax - Headline
Profit before tax before goodwill amortisation and exceptional items as       93.1                         42.0
reported under UK GAAP
- Pension costs, holiday pay accruals, share option costs, other              (0.7)                        (0.6)
- Share of JVs tax charge                                                     (1.7)                        (1.3)
- Reversal of deferred income release from swap closeout                      (5.4)                        (2.7)
- Interest on reclassified finance leases                                     (0.3)                        (0.2)
Headline profit before tax, under IFRS                                        85.0                         37.2

(4) Profit / (loss) before tax - Reported
Profit / (loss) before tax, as reported                                       (18.7)                       8.0
- Pension costs, holiday pay accruals, share option costs, other              (0.7)                        (0.6)
- Share of JVs tax charge                                                     (1.7)                        (1.3)
- Goodwill amortisation reversed                                              31.7                         15.9
- Goodwill on business disposals                                              2.3                          2.3
- Interest on reclassified finance leases                                     (0.3)                        (0.2)
Profit before tax, under IFRS                                                 12.6                         24.1

                                                                              2004                         2004
                                                                              Year                      First-half
                                                                              pence                        pence
(5) Earnings per share - Headline
Earnings per share before amortisation of goodwill and intangibles under UK                                14.3
GAAP; restated for 1 for 10 share consolidation in May 2005                   33.4                         
After tax effect of:
- Deferred income on swap close-out                                           (2.9)                        (1.5)
- All other items                                                             (0.4)                        (0.4)
Headline earnings per share, under IFRS                                       30.1                         12.4

(6) Earnings per share - Reported
Earnings per share under UK GAAP; restated for 1 for 10 share consolidation   (26.7)                       (3.7)
in May 2005
- Goodwill amortisation written-back                                          18.0                         9.6
- All other items                                                             (2.5)                        (1.5)
Earnings per share, under IFRS                                                (11.2)                       4.4

                                                                              2004                         2004
                                                                              Year                      First-half
                                                                              GBPm                         GBPm
(7) Net debt
Per UK GAAP, as reported                                                      306.9                        385.8
- Reclassification of asset securitisation financing                          10.7                         11.7
- Additional finance leases recognised                                        4.2                          4.5
As restated under IFRS                                                        321.8                        402.0

(8) Employee benefits liability
Net accruals per UK GAAP, as reported                                         29.8                         37.6
- Reclassification of pension asset                                           6.4                          6.8
- Reversal of UK GAAP net accruals                                            (36.2)                       (44.4)
- Defined benefit pension scheme and other post- retirement benefit           189.9                        188.8
arrangement deficits
As restated under IFRS                                                        189.9                        188.8

(9) Shareholders' equity
Per UK GAAP, as reported                                                      559.4                        591.6
- Pension and other post-retirement benefits                                  (153.7)                      (144.4)
- Goodwill amortisation                                                       31.7                         15.9
- Others, including tax on IFRS adjustments                                   (6.0)                        (4.7)
As restated under IFRS                                                        431.4                        458.4




Appendix: Summary reconciliation of the Group's UK GAAP 2004 Financial 
Statements to IFRS

1 Basis of preparation

Cookson  Group  plc   ("Cookson"  or  "the  Company")  will  report  its  annual
consolidated  financial  statements  for 2005 in accordance  with  International
Financial  Reporting  Standards  ("IFRS").  This appendix presents and explains,
notably in section 2.8, the unaudited  conversion of the consolidated results of
Cookson from UK Generally Accepted  Accounting Practice ("UK GAAP") onto an IFRS
basis for the six months ended 30 June 2004 and the year ended 31 December  2004
and  similarly the Group's  financial  position as at that date and also 30 June
2004 and at the date of the transition of the Company's  consolidated  financial
statements to IFRS, being 1 January 2004.

The financial  information  in this appendix has been prepared on the assumption
that all IFRSs, including  interpretations issued by the International Financial
Reporting   Interpretations   Committee  and  by  the  International  Accounting
Standards Board  effective for year end 2005 reporting,  will be endorsed by the
European Commission, notably the amendments made to IAS 19, "Employee Benefits".
Endorsement  of all such  pronouncements  has not occurred as at the date of the
publication  of this  announcement.  The failure of the European  Commission  to
endorse  all of  these  standards  in  time  for  Cookson's  year-end  financial
reporting in 2005 could result in the need to change the basis of  accounting or
the  presentation of certain  financial  information from that presented in this
appendix.  It is possible,  therefore,  that further changes will be required to
this information before it is published as comparative  information for the full
year 2005.

The financial  information,  in the form of the primary statements  contained in
this appendix, is presented in accordance with International Accounting Standard
("IAS") 1, "Presentation of Financial Statements".  Where no definitive guidance
exists  in IAS 1, a UK GAAP  approach  has been  adopted  in  order to  maintain
consistency  with  prior  years.   This  format  and  presentation  may  require
modification  in the event that further  guidance is issued,  but  otherwise the
Company  believes that the basis on which this  financial  information  has been
prepared will be sufficient to enable it to comply fully with IFRS in its annual
financial  statements  for the  year  ended 31  December  2005  without  further
significant   modification  to  either  the  format  and   presentation  or  the
comparative  financial information contained in the primary financial statements
herein.

The  comparative  figures for the financial  year ended 31 December 2004 are not
the Company's statutory accounts for that financial year. Those accounts,  which
were prepared under UK GAAP, have been reported on by the Company's  auditor and
delivered  to  the  Registrar  of  Companies.  The  report  of the  auditor  was
unqualified  and did not contain a statement  under section 237(2) or (3) of the
Companies Act 1985.  These sections  address whether proper  accounting  records
have been kept,  whether the  Company's  accounts  are in  agreement  with these
records  and  whether  the  auditor  has  obtained  all  the   information   and
explanations necessary for the purposes of their audit.

At the  Company's  Annual  General  Meeting  held on 26 May  2005,  shareholders
approved a share  consolidation.  The share  consolidation took effect following
the  close of  business  on 26 May 2005,  with  shareholders  receiving  one New
Ordinary Share of 10p each for every 10 existing ordinary shares of 1p each held
at the close of business on 26 May 2005.  Trading in the New Ordinary  Shares of
10p  commenced on 27 May 2005.  The  information  in this  appendix  relating to
earnings  per share has been  restated  to take into  account the impact of this
share consolidation.

Disclosure of significant items

IAS 1 provides no definitive  guidance as to the format of the income statement,
but states key lines which should be disclosed.  It also  encourages  additional
line items to be added and the re-ordering of items presented on the face of the
income  statement when  appropriate for a proper  understanding  of the entity's
financial  performance.  In  keeping  with the  spirit of this  aspect of IAS 1,
Cookson has adopted a policy of disclosing  separately on the face of its income
statement the effect of any  components of financial  performance  considered by
management to be significant  and/or for which separate  disclosure would assist
both in a better  understanding  of the  financial  performance  achieved and in
making projections of future results. Materiality and/or the nature and function
of the  components  of income and expense are  considered  in deciding upon such
presentation.  Such items may include,  inter alia, the financial  effect of any
profit or loss  arising on  business  disposals,  major  rationalisation  and/or
restructuring  activity,  profits  and  losses  on sale or  impairment  of fixed
assets,  amortisation  of  intangibles  and other items,  including the taxation
impact of the  afore-mentioned  items,  which have a  significant  impact on the
Group's results of operations either due to their size or nature.

On the face of the  income  statement,  Cookson  separately  discloses  "trading
profit",  being profit from operations  before the costs of  rationalisation  of
operations, the profit or loss relating to fixed assets and the amortisation and
impairment of intangibles.

2 Restatement of Financial Statement Comparatives from UK GAAP to IFRS

2.1 Income statement, balance sheet and cash flow reclassifications from 
    UK GAAP to IFRS

The  adoption  of IFRS  requires  certain  changes  to be made to the format and
presentation  of income  statement,  balance  sheet  and cash  flow  information
previously  disclosed  under UK GAAP. In the income  statement and balance sheet
shown in sections 2.3 and 2.4 and in the statement of cash flows,  the following
principal changes have been made to the statements previously disclosed under UK
GAAP prior to presenting them in section 2.3 and 2.4:

     i. Under UK GAAP,  profits and losses arising on the disposal or write-down
     of fixed assets were shown separately below operating  profit.  Under IFRS,
     such profits and losses are shown as a component of profit from operations.

     ii. Long-term  debtors  previously  included within current assets under UK
     GAAP of GBP37.5m at 31 December  2004 (1 January  2004:  GBP28.3m;  30 June
     2004: GBP27.1m) are included within non-current assets under IFRS.

     iii.  Under IFRS,  deferred tax assets and  liabilities  are required to be
     shown as separate line items on the balance  sheet.  This has resulted in a
     reclassification  of deferred tax assets previously included within debtors
     under UK GAAP of GBP35.3m at 31 December 2004 (1 January 2004: GBP53.5m; 30
     June 2004:  GBP49.5m);  and deferred tax  liabilities  previously  included
     within  provisions  under UK GAAP of GBP8.6m at 31 December 2004 (1 January
     2004: GBP11.5m; 30 June 2004: GBP11.5m).

     iv.  Under IFRS,  income taxes  recoverable  and payable are required to be
     shown as separate line items on the balance  sheet.  This has resulted in a
     reclassification  of income  tax  recoverable  previously  included  within
     debtors  under UK GAAP of GBP3.1m  at 31  December  2004 (1  January  2004:
     GBP3.0m; 30 June 2004: GBP2.2m); and income tax payable previously included
     within  creditors  under UK GAAP of GBP11.6m at 31 December 2004 (1 January
     2004: GBP15.5m; 30 June 2004: GBP15.9m).

     v. IFRS requires amounts received under debtor securitisation  arrangements
     to be shown as  liabilities  and not as a deduction  against the associated
     debtor balances,  as under UK GAAP. This has resulted in a reclassification
     of  these  receipts  at 31  December  2004 of  GBP10.7m  (1  January  2004:
     GBP11.2m;  30 June 2004: GBP11.7m) from debtors to "interest-bearing  loans
     and borrowings".

     vi. IFRS requires  provisions expected to be settled within one year of the
     balance sheet date to be shown as current liabilities. This has resulted in
     a  reclassification  at 31  December  2004 of  GBP15.1m  (1  January  2004:
     GBP13.4m;  30 June 2004: GBP17.5m) from non-current  liabilities to current
     liabilities.

     vii. Certain US assets held in Rabbi trusts to meet pension obligations are
     not  classified  by  IAS 19 as  pension  assets.  This  has  resulted  in a
     reclassification  of these assets at 31 December 2004 of GBP6.4m (1 January
     2004:   GBP6.9m;   30  June  2004  GBP6.8m)  from   prepayments  to  "other
     investments".

     viii. IFRS requires  certain  overdrafts to be included within the balances
     disclosed as "cash and cash equivalents",  whereas overdrafts were included
     within borrowings under UK GAAP. This has resulted in a reclassification at
     31  December  2004 of  GBP3.4m  (1  January  2004:  GBP4.0m;  30 June 2004:
     GBP6.7m) from current liabilities to current assets.

     ix. In addition to the change in  presentation  brought  about by item viii
     above,  the Group  statement  of cash flows under IFRS must comply with the
     format  and  headings  prescribed  in  IAS 7.  With  the  exception  of the
     reclassification  described  in viii  above,  no  other  IFRS  transitional
     adjustments  impacted  on  the  restated  net  cash  flow  from  operating,
     investing or financing activities.


2.2 Accounting adjustments made on transition from UK GAAP to IFRS

As required by IFRS 1,  Cookson has  prepared  reconciliation  statements  which
present the adjustments  made in order to transition the Group's UK GAAP primary
statements for 2004 onto an IFRS basis.  Reconciliations are provided in respect
of the  adjustments  made  to the  Group's  financial  position  at the  date of
transition  to IFRS,  1 January  2004,  and also at 30 June 2004 and 31 December
2004. With regard to the Group's reported financial performance, reconciliations
are  provided  for the six months ended 30 June 2004 and for the full year ended
31 December 2004. The reconciliations in this appendix are located as follows:

- Income Statement reconciliation from UK GAAP to IFRS Section 2.3
- Balance Sheet reconciliation from UK GAAP to IFRS Section 2.4
- Group statement of Recognised Income and Expense reconciliation from UK GAAP 
  to IFRS Section 2.5
- Group reconciliation of Equity from UK GAAP to IFRS Section 2.6
- Details of adjustments made on transition from UK GAAP to IFRS Section 2.7
- Summary description of significant IFRS adjustments Section 2.8

2.3 Income Statement reconciliation from UK GAAP to IFRS


                                                                                Half year                            Full year
                                                                                     2004                                 2004
                                                             As   Effect of   Reported in         As    Effect of  Reported in
                                                       Reported  transition    compliance   Reported   Transition    compliance
                                                       under UK     to IFRS     with IFRS   under UK      to IFRS    with IFRS 
                                                           GAAP                                 GAAP                    
                                                Note      (note                                (note                  
                                                 2.7       2.1)                                 2.1)               
                                                 ref       GBPm        GBPm          GBPm      GBPm         GBPm           GBPm
                                                                                                       
Revenue                                          (a)       817.1      (0.4)         816.7    1,653.0       (0.5)       1,652.5
Manufacturing costs  - raw materials             (b)     (364.6)        0.3       (364.3)    (756.2)         0.4       (755.8)
                     - other                             (226.2)          -       (226.2)    (447.1)           -       (447.1)
Administration, selling and distribution                                                                                       
costs                                            (c)     (173.8)      (0.5)       (174.3)    (334.1)       (0.6)       (334.7)

Trading profit                                              52.5      (0.6)          51.9      115.6       (0.7)         114.9

Rationalisation of operating activities                   (11.0)          -        (11.0)     (22.7)           -        (22.7)
Amortisation and impairment of intangibles       (d)      (16.3)       15.9         (0.4)     (32.5)        31.7         (0.8)
Profit / (loss) relating to fixed assets                     1.1          -          1.1     (16.8)           -        (16.8)

Profit from operations                                      26.3       15.3          41.6       43.6        31.0          74.6

Finance income
       Ongoing activities                                    2.2          -           2.2        0.9           -           0.9
       Income from swap close-out                            2.7          -           2.7        5.4           -           5.4

Finance costs
       Ongoing activities                        (e)      (18.0)      (0.2)        (18.2)     (32.8)       (0.3)        (33.1)
Share of post-tax profit from joint ventures                 1.3          -           1.3        2.3           -           2.3
Loss on disposal of operations                   (f)       (7.8)        2.3         (5.5)     (39.8)         2.3        (37.5)

Profit before tax                                            6.7       17.4          24.1     (20.4)        33.0          12.6

Income tax:
       Ongoing activities                        (g)      (11.3)          -        (11.3)     (24.5)         0.2        (24.3)
       Deferred tax charge on goodwill           (g)           -      (2.1)         (2.1)          -       (4.1)         (4.1)
       Other net credits / (charges)                         0.1          -           0.1      (1.2)           -         (1.2)

Profit / (loss) for the period                             (4.5)       15.3          10.8     (46.1)        29.1        (17.0)

Profit attributable to minority interests                  (2.5)          -         (2.5)      (4.1)           -         (4.1)

Profit / (loss) attributable to equity                                                                                         
holders                                                    (7.0)       15.3           8.3     (50.2)        29.1        (21.1)

Basic earnings per share                                  (3.7)p       8.1p          4.4p    (26.7)p       15.5p       (11.2)p

Diluted earnings per share                                (3.6)p       7.9p          4.3p    (26.7)p       15.5p       (11.2)p

Headline profit before taxation and earnings                                                                                   
per share:                                                                                                                     

Trading profit                                              52.5      (0.6)          51.9      115.6       (0.7)         114.9
Share of post-tax profit from joint ventures                 1.3          -           1.3        2.3           -           2.3
Finance costs for ongoing activities, net                 (15.8)      (0.2)        (16.0)     (31.9)       (0.3)        (32.2)

Headline profit before tax                                  38.0      (0.8)          37.2       86.0       (1.0)          85.0

Income tax on ongoing activities                          (11.3)          -        (11.3)     (24.5)         0.2        (24.3)
Profit attributable to minority interests                  (2.5)          -         (2.5)      (4.1)           -         (4.1)

Headline profit attributable to equity                                                                                         
holders                                                     24.2      (0.8)          23.4       57.4       (0.8)          56.6
                                             
Headline basic earnings per share                          12.8p     (0.4)p         12.4p      30.5p      (0.4)p         30.1p




2.4 Balance Sheet reconciliation from UK GAAP to IFRS


                                                     1 January                           30 June                      31 December
                                                          2004                              2004                             2004
                                      As    Effect    Reported         As     Effect   Reported          As    Effect    Reported
                           Note Aeported        of          in   Aeported         of         in    Aeported        of          on
                            2.7 under UK    Transi- compliance   under UK    Transi-  Compliance   under UK   Transi-  Compliance
                            ref     GAAP      tion       with        GAAP       tion       with        GAAP      tion   with IFRS
                                   (note        to       IFRS       (note         to       IFRS       (note        to  
                                   (2.1)      IFRS                   2.1)       IFRS                   2.1)      IFRS
                                   GBPm       GBPm        GBPm       GBPm       GBPm        GBPm       GBPm      GBPm        GBPm
                                                                                                
Assets

  Property, plant and                                                                                                             
  equipment                 (h)    350.7       4.1       354.8      332.0        3.7       335.7      319.6       3.3       322.9
  Intangible assets         (i)    514.0         -       514.0      487.6       15.9       503.5      453.5      31.7       485.2
  Investments in joint                                                                                                            
  ventures                          18.8         -        18.8       14.5          -        14.5       14.7         -        14.7
  Other Investments                 37.2         -        37.2       36.0          -        36.0       16.7         -        16.7
  Income tax recoverable               -         -           -        2.2          -         2.2        2.2         -         2.2
  Deferred tax assets       (j)     53.5     (0.6)        52.9       49.5      (2.6)        46.9       35.3     (4.1)        31.2
  Other assets                       8.2         -         8.2       10.1          -        10.1       10.6         -        10.6

Total non-current assets           982.4       3.5       985.9      931.9       17.0       948.9      852.6      30.9       883.5

  Cash and cash equivalents         52.8         -        52.8       31.5          -        31.5       44.0         -        44.0
  Inventories               (k)    172.9     (0.3)       172.6      193.8        0.1       193.9      174.0       0.1       174.1
  Trade and other                                                                                                                 
  receivables               (l)    316.9       0.4       317.3      324.9      (0.1)       324.8      303.5     (0.1)       303.4
  Income tax recoverable             3.0         -         3.0          -          -           -        0.9         -         0.9

Total current assets               545.6       0.1       545.7      550.2          -       550.2      522.4         -       522.4

Total assets                     1,528.0       3.6     1,531.6    1,482.1       17.0     1,499.1    1,375.0      30.9     1,405.9

Equity

  Issued capital                   375.4         -       375.4      375.4          -       375.4      375.5         -       375.5
  Share premium                    642.6         -       642.6      643.4          -       643.4      643.4         -       643.4
  Retained earnings         (m)  (608.8)   (128.0)     (736.8)    (633.1)    (133.2)     (766.3)    (665.4)   (128.0)     (793.4)
  Other reserves                   205.9         -       205.9      205.9          -       205.9      205.9         -       205.9

Total shareholders' equity         615.1   (128.0)       487.1      591.6    (133.2)       458.4      559.4   (128.0)       431.4

Minority interests                  11.8         -        11.8       11.7          -        11.7       11.7         -        11.7

Total equity                       626.9   (128.0)       498.9      603.3    (133.2)       470.1      571.1   (128.0)       443.1

Liabilities

  Interest-bearing loans                                                                                                          
  and borrowings                   320.3         -       320.3      334.0          -       334.0      326.1         -       326.1
  Employee benefits         (n)     47.1     126.1       173.2       44.4      144.4       188.8       36.2     153.7       189.9
  Trade and other payables          69.3         -        69.3       97.9          -        97.9       58.3         -        58.3
  Provisions                        20.7         -        20.7       16.8          -        16.8       10.3         -        10.3
  Deferred tax liabilities          11.5         -        11.5       11.5          -        11.5        8.6         -         8.6

Total non-current liabilities      468.9     126.1       595.0      504.6      144.4       649.0      439.5     153.7       593.2

  Interest-bearing loans                                                                                                          
  and borrowings            (o)    102.2       4.8       107.0       95.0        4.5        99.5       35.5       4.2        39.7
  Trade and other payables  (p)    301.1       0.8       301.9      245.8        1.4       247.2      302.2       1.0       303.2
  Income tax payable        (q)     15.5     (0.1)        15.4       15.9      (0.1)        15.8       11.6         -        11.6
  Provisions                        13.4         -        13.4       17.5          -        17.5       15.1         -        15.1

Total current liabilities          432.2       5.5       437.7      374.2        5.8       380.0      364.4       5.2       369.6

Total liabilities                  901.1     131.6     1,032.7      878.8      150.2     1,029.0      803.9     158.9       962.8

Total equity and liabilities     1,528.0       3.6     1,531.6    1,482.1       17.0     1,499.1    1,375.0      30.9     1,405.9




2.5 Group Statement of Recognised Income and Expense reconciliation from 
  UK GAAP to IFRS


                                                                      Half year                            Full year
                                                                         2004                                  2004
                                                                 As      Effect    Reported          As   Effect of   Reported in
                                                           Reported          of          in    Reported  Transition    compliance
                                                           under UK  transition  Compliance    under UK     to IFRS     with IFRS
                                                               GAAP     to IFRS   with IFRS        GAAP                 GAAP GBPm
                                                               GBPm        GBPm        GBPm        GBPm       GBPm           GBPm
                                                                                                            
Foreign exchange translation differences                      (20.1)      (3.4)       (23.5)       (9.8)      (2.2)        (12.0)
Actuarial loss on employee benefit schemes                         -     (15.9)       (15.9)           -     (26.8)        (26.8)

Income and expenses recognised directly in equity             (20.1)     (19.3)       (39.4)       (9.8)     (29.0)        (38.8)

Profit/(loss) for the period                                   (4.5)       15.3         10.8      (46.1)       29.1        (17.0)

                                                              (24.6)      (4.0)       (28.6)      (55.9)        0.1        (55.8)

Profit attributable to minority interests                      (2.5)          -        (2.5)       (4.1)          -         (4.1)
Foreign exchange translation differences attributable                                                                             
to minority interests                                            0.5          -          0.5         1.1          -           1.1
                                                               (2.0)          -        (2.0)       (3.0)          -         (3.0)


Total recognised income and expenses attributable to                                                                              
equity holders                                                (26.6)      (4.0)       (30.6)      (58.9)        0.1        (58.8)




2.6 Group reconciliation of Equity from UK GAAP to IFRS


                                                          Issued    Share   Retained      Other         Total  Minority    Total
                                                          Cpital  premium   earnings   Reserves        equity  interest   equity
                                                                                                 attributable  
                                                                                                    to equity             
                                                                                                      holders            
                                                            GBPm     GBPm       GBPm       GBPm          GBPm      GBPm     GBPm
                                                                                                       
Total equity as at 1 January 2004
  As previously stated under UK GAAP                       375.4     642.6    (608.8)     205.9         615.1      11.8     626.9
  Effect of transition to IFRS (note 2.7(m))                   -         -    (128.0)         -       (128.0)         -   (128.0)

Total equity as at 1 January 2004 (as restated under                                                                              
IFRS)                                                      375.4     642.6    (736.8)     205.9         487.1      11.8     498.9

  Movements for the period as reported under UK GAAP:
  Total net recognised losses relating to the period           -         -     (26.6)         -        (26.6)       2.0    (24.6)
  New share capital issued                                     -       0.8          -         -           0.8         -       0.8
  Dividends paid to minority interest                          -         -          -         -             -     (2.1)     (2.1)
  Goodwill transferred to the income statement on the                                                                             
  sale of operations                                           -         -        2.3         -           2.3         -       2.3
                                                               -       0.8     (24.3)         -        (23.5)     (0.1)    (23.6)
  Movements for the period (effect of transition to                                                                               
  IFRS):                                                                                                                          
  Total effect of IFRS adoption on net recognised                                                                                 
  losses relating to the period                                -         -      (4.0)         -         (4.0)         -     (4.0)
  Share-based payments (note 2.7(c))                           -         -        1.1         -           1.1         -       1.1
  Reversal of goodwill transferred to the income                                                                                  
  statement on the sale of operations (note 2.7(f))            -         -      (2.3)         -         (2.3)         -     (2.3)
                                                               -         -      (5.2)         -         (5.2)         -     (5.2)


Total equity as at 30 June 2004                            375.4     643.4    (766.3)     205.9         458.4      11.7     470.1

Total equity as at 1 January 2004 (as restated under                                                                              
IFRS)                                                      375.4     642.6    (736.8)     205.9         487.1      11.8     498.9

  Movements for the period as reported under UK GAAP:
  Total net recognised losses relating to the period           -         -     (58.9)         -        (58.9)       3.0    (55.9)
  New share capital issued                                   0.1       0.8          -         -           0.9         -       0.9
  Dividends paid to minority interest                          -         -          -         -             -     (3.1)     (3.1)
  Goodwill transferred to the income statement on the                                                                             
  sale of operations                                           -         -        2.3         -           2.3         -       2.3
                                                             0.1       0.8     (56.6)         -        (55.7)     (0.1)    (55.8)
  Movements for the period (effect of transition to                                                                               
  IFRS):                                                                                                                          
  Total effect of IFRS adoption on net recognised                                                                                 
  losses relating to the period                                -         -        0.1         -           0.1         -       0.1
  Share-based payments (note 2.7(c))                           -         -        2.2         -           2.2         -       2.2
  Reversal of goodwill transferred to the income                                                                                  
  statement on the sale of operations (note 2.7(f))            -         -      (2.3)         -         (2.3)         -     (2.3)
                                                               -         -          -         -             -         - -


Total equity as at 31 December 2004                        375.5     643.4    (793.4)     205.9         431.4      11.7     443.1


2.7 Details of adjustments made on transition from UK GAAP to IFRS
                                                                                                   Half year       Full year
                                                                                                        2004            2004
                                                                                                        GBPm            GBPm
(a) Revenue
Adjustment of sales to prior period                                                                    (0.4)           (0.5)
(b) Manufacturing costs - raw materials
Adjustment of sales to prior period                                                                      0.3             0.4
(c) Administration, selling and distribution costs
Long-term employee benefits (note 2.8(a))                                                                1.1             1.6
Holiday pay accruals(note 2.8(b))                                                                      (0.6)           (0.1)
Share-based payments (note 2.8(c))                                                                     (1.1)           (2.2)
Reclassify operating leases to finance leases (note 2.8(g))                                              0.2             0.3
Depreciation charge on mothballed assets                                                               (0.1)           (0.2)

                                                                                                       (0.5)           (0.6)
(d) Amortisation of intangibles
Reversal of goodwill amortisation charged under UK GAAP (note 2.8(f))                                   15.9            31.7
(e) Finance costs
Reclassify operating leases to finance leases (note 2.8(g))                                            (0.2)           (0.3)
(f) Profit/(loss) on disposal of operations
Reversal of goodwill amortisation charged under UK GAAP (note 2.8(f))                                    2.3              2.3
(a) Income tax
Deferred tax on IFRS adjustments     - holiday pay accruals, long-term employee benefits and                                 
for:                                   share- based payments                                              -              0.2
                                     - goodwill (note 2.8(h))                                           (2.1)           (4.1)

                                                                                                        (2.1)           (3.9)

                                                                                    1 January         30 June     31 December
                                                                                         2004            2004            2004
                                                                                         GBPm            GBPm            GBPm
(b) Property, plant and equipment
Reclassify operating leases to finance leases (note 2.8(g))                               4.5             4.2             3.9
Accumulated depreciation charge on mothballed assets                                    (0.4)           (0.5)           (0.6)

                                                                                          4.1             3.7             3.3
(c) Intangible assets
Reversal of goodwill amortisation charged under UK GAAP (note 2.8(f))                       -            15.9            31.7
2.7 Details of adjustments made on transition from UK GAAP to IFRS, continued
                                                                                    1 January         30 June      31 December
                                                                                         2004            2004             2004
                                                                                         GBPm            GBPm             GBPm
(d) Deferred tax assets
Deferred tax on IFRS adjustments   - holiday pay accruals, long-term                                                         
for:                                 employee benefits and share-based                                                         
                                     payments                                             1.6             1.6              1.9
                                   - goodwill (note 2.8(h))                              (2.2)           (4.2)            (6.0)
                                                                                         (0.6)           (2.6)            (4.1)
(e) Inventories
Adjustment of sales to prior period                                                      (0.3)            0.1              0.1
(f) Trade and other receivables
Adjustment of sales to prior period                                                       0.4            (0.1)            (0.1)
(g) Retained earnings
Holiday pay accruals (note 2.8(b))                                                       (0.8)           (1.4)            (1.0)
Reclassify operating leases to finance leases (note 2.8(g))                              (0.3)           (0.3)            (0.3)
Recognition of actuarial gains and losses on defined benefit pension and                                                      
other post-retirement obligations(note 2.8(a))                                         (126.1)         (144.4)          (153.7)
Adjustment of sales to prior periods                                                       0.1              -                -
Reversal of goodwill amortisation charged under UK GAAP(note 2.8(f))                         -           15.9             31.7
Accumulated depreciation charge on mothballed assets                                     (0.4)           (0.5)            (0.6)
                                                                                       (127.5)         (130.7)          (123.9)
Tax effect of all IFRS restatement adjustments                                           (0.5)           (2.5)            (4.1)


                                                                                       (128.0)         (133.2)          (128.0)
(h) Employee benefits
Recognition of actuarial gains and losses on defined benefit pension schemes                                                  
and other post-retirement benefits (note 2.8(a))                                        126.1           144.4            153.7
(i) Interest-bearing loans and borrowings 
Reclassify operating leases to finance leases (note 2.8(g))                               4.8             4.5              4.2
(j) Current trade and other payables
Holiday pay accruals (note 2.8(b))                                                        0.8             1.4              1.0
(k) Income tax payable
Income taxes on long-term employee benefit deficit                                       (0.1)           (0.1)               -


2.8 Summary description of significant IFRS adjustments


A summary of the principal  adjustments  made in order to transition the Group's
UK GAAP financial statements to IFRS are noted below.

(a) Long-term employee benefits

Under UK GAAP, the Group accounted for pension and other post-retirement benefit
obligations  in  accordance  with  SSAP  24,  "Accounting  for  Pension  Costs".
Additional  disclosures  were  given  in  compliance  with  FRS 17,  "Retirement
Benefits".  Under IFRS, the Group accounts for pension and other post-retirement
benefit obligations in accordance with IAS 19, "Employee  Benefits"(as amended),
which is similar to FRS 17 in many  respects,  particularly  in that it requires
the net deficit of the Group's defined benefit pension and other post-retirement
benefit arrangements to be brought onto the Group balance sheet. As permitted by
IFRS 1, all  cumulative  actuarial  gains and  losses  relating  to the  Group's
pension and other  post-retirement  benefit  obligations have been recognised in
equity at the transition date.

When valuing pension and other post-retirement benefit obligations under IAS 19,
two methods of recognising actuarial gains and losses through Group reserves are
acceptable:  one whereby all gains and losses are recognised in reserves as they
arise,  through the  Statement  of  Recognised  Income and Expense  (the "SORIE"
approach);  the other providing a "smoothing"  methodology which would recognise
periodic changes in gains and losses only to the extent that they fall outside a
"corridor"  represented  by 10% of scheme  assets or  liabilities.  Cookson  has
adopted the SORIE approach,  which is intended to provide  greater  stability in
the pension charge made in the income statement from one period to the next.

Under IAS 19, the fair value of pension  scheme assets is  determined  using the
bid price,  as opposed to  mid-market  price used under UK GAAP.  With regard to
other post-retirement  obligations,  adoption of IAS 19 leads to the recognition
of certain  long-term  benefit  obligations,  including  leaving and termination
obligations, which were not previously recognised under UK GAAP.

Under UK  GAAP,  the  Group  recognised  net  accruals  for  pension  and  other
post-retirement  obligations  at 31 December  2004 of GBP29.8m (1 January  2004:
GBP40.2m;  30 June 2004:  GBP37.6m).  Under IFRS, these balances are reversed to
reserves and replaced in total with an  actuarially-determined  value of the net
deficit  arising  on the  Group's  defined  benefit  pension  schemes  and other
post-retirement benefit arrangements.

The actuarial  valuation of the Group's combined defined benefit pension schemes
and other  post-retirement  benefit  arrangements at 31 December 2004 produced a
combined  net deficit of  GBP189.9m (1 January  2004:  GBP173.2m;  30 June 2004:
GBP188.8m),  these sums being recognised in the Group balance sheet as "Employee
benefits".  The  comparative  combined  net  deficit  valuation  of the  Group's
employee  benefit  obligations  under FRS 17 at 31 December 2004 was  GBP175.3m.
Under UK GAAP,  the regular  charge to the profit and loss account in respect of
defined  benefit pension and other  post-retirement  obligations was GBP17.1m in
2004. The equivalent  charge to the income  statement  under IAS 19 for 2004 was
GBP13.7m.

As a result  of the  transition  from UK GAAP to IFRS,  the net  impact on Group
reserves in respect of the Group's employee benefit arrangements was a reduction
of  GBP153.7m  at 31 December  2004 (1 January  2004:  GBP126.1m;  30 June 2004:
GBP144.4m).

(b) Short-term employee benefits (holiday pay accruals)

Under  IAS  19,  "Employee  benefits",  Cookson  accrues  for  the  cost  of all
short-term accumulating compensated absences, such as holiday entitlement earned
but not  taken at the  balance  sheet  date.  Under UK GAAP,  Cookson  companies
accrued  for  holiday pay only where this was  required  under local  accounting
requirements.

The impact of IAS 19 on Cookson's  transition to IFRS is to increase the holiday
pay accrual by GBP1.0m as at 31 December 2004 (1 January 2004:  GBP0.8m; 30 June
2004:  GBP1.4m).  The incremental charge to the income statement was GBP0.6m for
the  half-year to June 2004 and GBP0.1m for the full year.  Due to the timing of
employees'  holidays,  the accruals for holiday pay earned but not taken made in
the first half of the year are expected  substantially  to reverse in the second
half as holidays are taken.

(c) Share-based payments

Cookson has a number of share-based incentive option arrangements. Under IFRS 2,
"Share-based Payments",  Cookson has to fair value the cost of all share options
at the date of the options being granted and that cost has to be recognised over
the relevant vesting periods.

Historically,  the Cookson  shares used to satisfy the exercise of those options
granted  under  the  Group's  share-based   incentive   arrangements  which  are
equity-settled have been newly-issued shares, or shares held through the Group's
Employee Share  Ownership Plan.  Accordingly,  no profit and loss account charge
has needed to be recognised in prior periods under UK GAAP.

Cookson has adopted the exemption given by IFRS 1 to apply IFRS 2 only to awards
made after 7 November  2002.  As a result of the  adoption  of IFRS 2, an income
statement  charge of  GBP2.2m  was made for the full year 2004  (half year 2004:
GBP1.1m).

(d) Joint ventures

Under UK GAAP,  Cookson  included its share of the results of joint  ventures in
its  consolidated  financial  statements  under  the net  equity  method,  which
resulted  in the  inclusion  of the  Group's  proportionate  share of  turnover,
operating  profit,  interest and tax charges of the joint venture  entity in the
appropriate Group income statement line item.

Under IAS 31,  "Interests in Joint Ventures",  the results of joint ventures can
either  be  shown  using  the  net  equity  method  or  by  using  proportionate
consolidation.   Cookson  has  chosen  to  retain  the  net  equity   method  of
recognition, but under IFRS this now requires disclosure of the Group's share of
the  after-tax  profit of its joint venture  investments  on one line within the
Group income statement.

(e) Discontinued operations

Under IFRS 5,  "Non-current  Assets Held for Sale and Discontinued  Operations",
the trading  results of  discontinued  operations  are  presented  separate from
continuing operations.  "Discontinued  operations" comprise all or substantially
all of a separate major line of business or geographical  area of operation that
can be distinguished operationally and for financial reporting purposes. None of
the business  disposals made in 2004 qualified as  "discontinued  operations" in
this financial information.

(f) Business combinations and Goodwill

Under  IFRS 3,  "Business  combinations",  the  purchase  cost  of all  business
acquisitions  is required to be applied against the fair value of all identified
tangible,  separable  intangible assets and liabilities of the acquired business
in the  determination  of any goodwill  arising on  acquisition.  IFRS 3 further
requires that any such  separable  intangible  fixed assets are  amortised  over
their  useful lives and that  goodwill  must then be carried at cost with annual
impairment  reviews.  Cookson has taken  advantage of the exemption under IFRS 1
not to restate all  business  combinations  prior to 1 January 2004 in line with
the requirements of IFRS 3.

As a result of the adoption of IFRS 3,  goodwill  amounting to GBP317.8m as at 1
January  2004 which had arisen on  acquisitions  made  before 1998 and which had
previously been written-off to Group reserves remains so written-off and will no
longer be recycled  through the income  statement on any subsequent  disposal of
the  businesses  to  which it  originally  related.  In  addition,  goodwill  of
GBP505.6m  recognised  on the Group  balance sheet under UK GAAP as at 1 January
2004 is carried unamortised, but is now subject to annual review for impairment.

The goodwill  amortisation  charge for the full year 2004 of GBP31.7m (half-year
2004: GBP15.9m) under UK GAAP has been reversed and the loss arising on business
disposals  has been  restated  to take  account  of the  impact of IFRS 3 on the
goodwill previously associated with these disposals.

(g) Leases

Under IAS 17,  "Leases",  the  distinction  between finance leases and operating
leases is similar to, but not exactly the same as, that under UK GAAP. Following
a review of the operating lease  arrangements  throughout the Group,  certain of
these leases have been determined to qualify as finance leases under IFRS.

Accordingly, the impact of the adoption of IAS 17 is to increase property, plant
and  equipment by GBP3.9m as at 31 December 2004 (1 January  2004:  GBP4.5m;  30
June  2004:  GBP4.2m).   Interest-bearing   loans  and  borrowings  (short-  and
long-term) are  accordingly  increased by GBP4.2m at 31 December 2004 (1 January
2004: GBP4.8m; 30 June 2004: GBP4.5m).  The impact on the income statement is to
increase  trading  profit by  GBP0.3m  for the full year 2004  (half-year  2004:
GBP0.2m)  and to  increase  finance  expenses  by GBP0.3m for the full year 2004
(half-year 2004: GBP0.2m).

(h) Deferred tax

Under IFRS,  deferred tax is recognised on all temporary  differences  that have
originated but not reversed at the balance sheet date, with certain  exceptions.
The  principal  exceptions  relate to temporary  differences  arising from Group
investments  where  Cookson is able to control the  reversal of those  temporary
differences and those differences are not expected to reverse in the foreseeable
future. In addition, deferred tax assets are recognised only to the extent it is
more likely than not that they will be realised within the foreseeable future.

On  transition  to IFRS,  the main areas in which changes to deferred tax assets
and  liabilities  have been  identified  are in respect of  rolled-over  taxable
gains,  pensions,  holiday  pay  accruals,   share-based  payments  and  on  tax
deductible  goodwill.  In the case of the  latter,  since  goodwill  arising  on
consolidation  is now frozen in value  under  IFRS,  subject  to any  impairment
charges required,  but goodwill amortisation is still allowed as a deduction for
tax purposes in many jurisdictions, this has the effect of generating a deferred
tax liability  which will continue to grow in future  periods until such time as
the goodwill amortisation  deductions cease or the goodwill asset is written-off
on disposal of the underlying businesses or as a result of impairment charges.

The net tax  impact  of the  adjustments  made on  adoption  of IFRS by  Cookson
resulted in a reduction of deferred tax assets of GBP4.1m at 31 December 2004 (1
January 2004: GBP0.6m; 30 June 2004: GBP2.6m),  including a liability of GBP6.0m
at 31 December 2004 (1 January 2004:  GBP2.2m; 30 June 2004: GBP4.2m) associated
with the Group's goodwill balance.

(i) Financial instruments

Cookson  has elected to adopt IAS 32,  "Financial  Instruments:  Disclosure  and
Presentation", and IAS 39, "Financial Instruments:  Recognition and Measurement"
with effect  from 1 January  2005 and has taken the  exemption  in IFRS 1 not to
restate comparatives for IAS 32 and IAS 39.

As a consequence of not early  adopting IAS 32 and IAS 39, the income  statement
for 2004  includes  finance  income which will,  under IFRS,  not recur in 2005,
being GBP5.4m  (half-year:  GBP2.7m) in respect of deferred  income  relating to
interest rate swaps  closed-out in prior years.  The total profit arising on the
close-out of these swaps was, under UK GAAP,  being brought into income over the
term of the underlying  loan  arrangements  to which the swaps had related.  The
total deferred income as yet unrecognised  through income as at 31 December 2004
was GBP22.3m.  On adoption of IAS 32 and IAS 39 with effect from 1 January 2005,
such credit balance will be taken directly to Group  reserves,  net of a related
tax charge.

(j) Cumulative currency translation differences

Under UK GAAP,  translation  differences  arising  on the  consolidation  of the
results of and  investment  in foreign  operations  do not have to be separately
identified   and  accounted  for  in  subsequent   disposals  of  those  foreign
operations.  Under IAS 21, "The Effects of Changes in Foreign  Exchange  Rates",
such translation  differences must be separately  reported in equity, net of the
result  on any  related  hedging  instruments;  and  on  disposal  of a  foreign
operation,  any associated cumulative translation differences are transferred to
the income statement as part of the gain or loss on disposal.

Cookson  has  adopted  the  exemption  allowed  under  IFRS 1 not to  separately
recognise  cumulative  translation  differences  arising prior to the transition
date. As a result, all cumulative translation  differences at 1 January 2004 are
deemed to be zero and all  subsequent  disposals  will  exclude any  translation
differences arising prior to the date of transition.






Exhibit No.9



COOKSON GROUP PLC INTERIM REPORT TO SHAREHOLDERS
26 July 2005


                                                           First Half                             Year
                                                      2005           2004                         2004
                                                                                        
Revenue (GBPm)                                         795            817                -3%     1,652
Trading profit* (GBPm)                                54.4           51.9                +5%     114.9
Return on sales                                       6.8%           6.4%          +0.4% pts      7.0%
Profit before tax (GBPm)
- Headline*                                           39.9           37.2                +7%      85.0
- Basic                                               33.3           24.1               +38%      12.6
Earnings per share (pence)
- Headline*                                           13.9           12.4               +12%      30.1
- Basic                                                8.5            4.4                       (11.2)

Free cash flow (GBPm)                                (22.8)         (21.2)          -GBP1.6m      51.6
Net debt (GBPm)                                      362.8          402.0       GBP39m lower     321.8


The above information is at reported exchange rates
*Refer to the income statement attached for definitions

- Trading profit up 5%
- Return on sales increases 0.4 % points
- 7% rise in headline profit before tax
- Headline EPS up 12%
- Net debt GBP39 million lower than June 2004
- Progress on strategy implementation
- Disposals to date raise GBP13 million

Commenting on the results, Nick Salmon, Chief Executive, said:

"The results for the first half of 2005 were in line with the guidance  provided
in May. The Group's performance  benefited from a more profitable second quarter
when compared to the first quarter.

Over  the  first  six  months  of 2005,  we have  also  made  good  progress  in
implementing  our strategy to improve the  operational  performance  of our core
businesses  and to dispose of non-core  businesses and surplus  properties.  The
Ceramics division has recorded excellent results on the back of continued strong
growth in global steel  production.  The  Electronics  division has  experienced
mixed market conditions globally,  with strong growth in the Asia Pacific region
offset by more challenging  conditions in NAFTA and Europe. Its Laminates sector
continues  to face  difficult  markets  and has made a loss in the  first  half,
necessitating  further  restructuring  in Europe and USA.  The  Precious  Metals
division has had to cope with continued  weakness in retail markets but, despite
very low volumes, has remained profitable.

The outlook for our markets  remains  unclear but we are  confident  that we are
taking the necessary steps to reduce our cost base and implement the strategy we
set out in January.  Given the market conditions we are currently  experiencing,
we would expect overall performance for the full year to be slightly better than
that achieved in 2004."

IFRS

The  results  for the Group for the first half of 2005 and  comparative  periods
have  been  restated  in  accordance  with  International   Financing  Reporting
Standards (IFRS).

The impact on the Group's 2004  financial  statements of its  transition to IFRS
was  communicated  to  shareholders  on 22 July  2005 by way of a press  and RNS
announcement and is available on the Company's website www.cooksongroup.co.uk.

STRATEGY - PROGRESS

As announced in January  2005 and as  described in our 2004 Annual  Report,  our
strategy focuses on performance enhancement,  debt reduction and the disposal of
non-core activities.

Our objectives include improving profitability, with targeted return on sales by
2007 of 10% in both the Ceramics and  Electronics  divisions and a return on net
sales (i.e.  excluding  the  precious  metals  content) of 15% for the  Precious
Metals division.  We also plan to reduce total debt  significantly over the next
2-3 years.  This will be achieved  through a combination  of strong  operational
cash flow - from improved  profitability and working capital  management - and a
disposal  programme  which aims to raise over GBP100  million from the sale of a
number of non-core  activities  and assets by the end of 2006.  In addition,  we
intend  to  resume a  sustainable  dividend  payment  as soon as  possible  with
dividends funded from free cash flow.

There are four main  components to advancing this strategy and progress is being
made in all of them:

- Products and Markets

We continue to focus on higher margin products with higher  technology  content,
maintaining  our  investments in R&D and exiting  commodity  activities  such as
rigid  laminates and certain types of ceramic  bricks.  Examples of new products
where we are seeing  encouraging  sales  growth in 2005 include thin slab caster
nozzles  and solar  crucibles  in the  Ceramics  division,  lead-free  products,
GETEK(TM)  laminates and copper  damascene in the  Electronics  division and our
newly-launched  tarnish  resistant  silver alloy  Argentium  (R) in the Precious
Metals division.

- Investment and Restructuring

We   continue   to  balance   production   facilities   and   customer   markets
geographically,    progressively   investing   in   emerging   economies   while
restructuring  as necessary in the more mature markets.  Examples from the first
half of 2005 include:

Ceramics

- NAFTA: modernisation and rationalisation of plants in the USA and Mexico 
  (completed).
- South Africa: rationalisation of two plants into one (launched).
- China, Brazil, Poland: additional production capacity for flow control
  products (nearing completion).
- China: increasing Cookson's shareholding in its joint venture with Wuhan 
  Steel from 25% to 50% plus capacity expansion (completed).

Electronics

- Germany and Sweden: reduction of laminates capacity in Germany and 
  streamlining production in Sweden (underway).
- Europe: rationalisation of certain Chemistry sector activities and reduction 
  of overheads (underway).
- NAFTA: Chemistry capacity expansion in Mexico and closure of a factory in 
  California and related overhead reductions (nearing completion).
- China: additional laminates production capacity (complete, further phase now 
  planned); new R&D technology centres in Shanghai and Shenzhen (completed).
- Singapore: Semiconductor packaging workforce reduction (completed).

Precious Metals

- USA: 8% reduction in workforce and consolidation onto one main site 
  (completed).
- Europe: restructuring of operations in France, exiting manufacturing and 
  relocating the sales force (nearing completion).

-  Cost reduction

By simplifying our structure and processes we can take out substantial  overhead
costs.  Progress  has been  made in many  areas,  particularly  in the Group and
Electronics  division  headquarters.  In  common  with  a  number  of  other  UK
companies,  we are now examining the required  steps to de-register as a foreign
private  issuer with the U.S.  Securities and Exchange  Commission,  which would
save significant administrative and audit costs.

We also continue to focus on improving our  materials  purchasing  efficiency to
control our raw material costs via centralised  global  procurement  initiatives
and sourcing from lower cost countries.

-  Disposals:

To date, the following  disposals of non-core  activities and surplus properties
have been  completed and cash proceeds  received:  



                                           Proceeds          Date Closed            Revenue               Trading
                                                                                       2004           Profit 2004
                                                                                                 
Fraternity Rings                            GBP3.0m             Dec 2004            GBP2.5m               GBP0.3m
Technical Ceramics                          GBP4.7m            June 2005            GBP4.6m               GBP1.0m
Conference Centre                           GBP1.3m            June 2005
Redundant Properties                        GBP4.4m            June 2005
Total                                      GBP13.4m



The disposal programme is at an early stage and we remain confident that we will
achieve the target of raising GBP100 million from disposals by the end of 2006.

Conclusion

We are satisfied with the progress in  implementing  our strategy  achieved over
the last six  months.  We expect to  maintain  progress in all four of the above
areas and to announce new related developments through the second half of 2005.

CURRENT OUTLOOK

The strong  growth in global  steel  production,  which  benefited  our Ceramics
division  in the first half,  is  expected  to moderate in the third  quarter as
global inventories correct.  While we have limited visibility beyond this point,
we expect growth to resume in the fourth quarter.

In our  Electronics  division's  global  markets  there  are  mixed  signals  of
continued growth in Asia-Pacific  balanced by further  slowdowns in NAFTA and EU
markets.

The Precious Metals division has  experienced  weak retail market  conditions in
the USA and Europe.  Whilst it is clearly too early to be specific on trends for
the rest of the year, the level of activity in the second half should improve on
that of the first given the influence on jewellery  sales of the normal  holiday
period and Christmas season.

The outlook for our markets  remains  unclear but we are  confident  that we are
taking the necessary steps to reduce our cost base and implement the strategy we
set out in January.  Given the market conditions we are currently  experiencing,
we would expect overall performance for the full year to be slightly better than
that achieved in 2004.

DIRECTORATE

Mike  Butterworth  was  appointed  to the Board on 15 June 2005 and will replace
Dennis  Millard as Finance  Director  when Mr.  Millard  leaves the Company,  as
previously announced, at the end of July.

Jeff Hewitt  joined the Board on 1 June 2005 and was  appointed  Chairman of the
Audit Committee on that date. Mr Hewitt replaces Kent Atkinson who resigned from
the Company in April 2005.

Gian Carlo  Cozzani,  executive  Director  and Chief  Executive  of the Ceramics
Division is to step down from the Board on reaching  retirement age on 6 October
2005. His designated  replacement as Chief  Executive of the Ceramics  Division,
Francois  Wanecq,  joined  the  Group  last  month  thereby  ensuring  a  smooth
transition.

REVIEW OF OPERATIONS

Note: The data provided in the tables on pages 5 to 14 are at reported exchange 
      rates.

Group

                              First Half                       Year
                        2005             2004                  2004
Revenue (GBPm)           795              817                 1,652
Trading profit (GBPm)   54.4             51.9                 114.9
Return on sales         6.8%             6.4%                  7.0%


Group  revenue in the first half of 2005 was 3% lower than the same  period last
year at both  reported and  constant  exchange  rates.  Revenue for the Ceramics
division  was up 3% over the  previous  half year and the  Electronics  division
revenue was virtually  unchanged,  whereas that of the Precious  Metals division
was down 22%.  Revenue for the Group's  operations  in the  Asia-Pacific  region
continued to grow strongly, now representing over 20% of Group revenue,  whereas
for operations in NAFTA and Europe, revenue was down on 2004.

Despite the decrease in revenue, trading profit of GBP54.4m in the first half of
2005 was 5% higher than the same period in 2004 at both  reported  and  constant
exchange rates.  The GBP2.5 million increase in trading profit in the first half
of 2005 arose from: a GBP6.7 million  increase by the Ceramics  division;  Group
Corporate  costs being GBP0.5  million lower than in the previous  year,  partly
offset by decreases in trading  profits of GBP3.6  million and GBP1.1 million by
the Electronics and Precious Metals divisions respectively.

Revenue of GBP408 million in the second quarter was 4% down year-on-year  though
trading  profit of GBP32.7  million was GBP3.5  million (12%) higher,  more than
offsetting the GBP1.1 million shortfall in the first quarter.

Ceramics division

                              First Half                          Year
                        2005             2004                      2004
Revenue (GBPm)           368              358                      740
Trading profit (GBPm)   34.4             27.7                      60.0
Return on sales         9.3%             7.7%                      8.1%


Revenue for the  Ceramics  division in the first half of 2005 was 3% higher than
the same period last year and up 2% at constant  exchange  rates.  Excluding the
revenue of the brick-making  businesses that were sold in December 2004, revenue
for the  division  for the  first  half of 2005 was up 8% at  reported  exchange
rates.

Trading profit of GBP34.4 million was 24% higher than the first half of 2004 and
rose by 22% at constant exchange rates.  Trading profit in the second quarter of
GBP20.2 million was up 30% at constant  exchange rates over the same period last
year. This reflects the continuing  improvement in profitability by the division
and, as a consequence,  the division's return on sales improved further,  rising
from 7.7% in the first half of 2004 to 9.3% in the period under review.

Iron and Steel

The Iron and Steel  sector  supplies  flow  control  products  that  control and
protect  the stream of molten  metal as it passes  through the  continuous  cast
steelmaking process;  bricks and monolithic linings to contain molten steel; and
construction and installation  services.  The sector is the division's  largest,
accounting for over 70% of the division's revenue.

Global  steel  production,  to which the  majority  of this  sector's  sales are
directly  linked,  rose by 8% to record levels in the first half of 2005. In the
sector's two largest  markets,  the  enlarged  European  Union and NAFTA,  which
account for some 45% and 30% of the sector's revenue,  steel production was down
some 2% year-on-year.  In the fast growing  Asia-Pacific  region, which accounts
for some 15% of the sector's total revenue,  steel production  continued to grow
strongly,  mainly due to a 28% rise in steel  production in China and a 12% rise
in India, both key markets for the sector.

Revenue for the Iron and Steel  sector rose by 7% to GBP262  million at constant
exchange rates in the first half,  boosted by strong underlying volume growth as
well as price increases,  and by more construction and installation projects. In
the second  quarter,  consistent  with the slowdown in the  year-on-year  growth
rates in steel production in the regions in which the sector  operates,  revenue
growth moderated and was up 6% at constant exchange rates in comparison with the
second quarter of the previous year.

Overall,  gross margins were  maintained  despite  increases in raw material and
energy  costs  and an  increase  in  relatively  lower-margin  construction  and
installation  activity.  In  addition,  a reduced  level of  overhead  costs was
achieved,  mainly as a result of the  rationalisation  programmes  initiated  in
operations  in the USA in the second half of last year and from the  increase in
capacity in Mexico. As a result, trading profit for the sector in the first half
improved over the previous year.

In the first  quarter,  a programme to  rationalise  the sector's  activities in
South Africa  commenced,  which  includes the  relocation of  activities  onto a
single site. The one-off rationalisation costs for this initiative,  and for the
completion of the above-mentioned ones in the USA, amounted to GBP1.1 million in
the first half.

Foundry and Industrial Processes

These  sectors  produce heat  containment  and flow  control  products and other
speciality  ceramics products for a wide variety of industries and applications.
Activities in Europe and NAFTA account for some 50% and 40%  respectively of the
sector total.

Revenue for these sectors of GBP72 million was up 1% at constant  exchange rates
over the first half of 2004.  This was generally in line with activity levels in
the end markets in which they operate in their main geographic  regions. As with
the Iron and Steel  sector,  profits rose on the back of improved  gross margins
and a lower cost base.  

Glass 

The  sector  produces  flow  control  and  brick/lining  products  for the glass
industry as well as crucibles  for making solar  energy  products.  In the first
half,  revenue of GBP34 million was down on the previous year but, excluding the
revenue of the European brick  businesses  sold in 2004,  revenue was 22% higher
than the previous year at constant  exchange rates.  As a result,  profitability
rose strongly, boosted by an excellent performance by the sector's operations in
Eastern Europe and China.

In the second quarter, the sector's US technical ceramics business, McDanel, was
sold. This business had revenue of GBP2.1 million in the six month period to the
date of sale  (GBP4.6  million for the full year in 2004) and  contributed  some
GBP0.3  million of the sector's  trading  profit in the first half.  

Electronics division

                                First Half                    Year
                         2005             2004                2004
Revenue (GBPm)            309              308                 625
Trading profit (GBPm)    20.9             24.5                52.8
Return on sales          6.8%             8.0%                8.4%


Revenue for the division  was  virtually  unchanged  over the first half of last
year at both reported and constant exchange rates. This broadly reflected market
conditions in the global electronics  industry,  where activity levels reached a
plateau in the first half of 2005  following a period of strong  growth in 2004.
In the second  quarter,  underlying  global  activity  levels in the electronics
industry slowed, resulting in a 2% year-on-year decrease in revenue.  Conditions
were challenging in the NAFTA and European operations,  each accounting for some
30% of the  division's  revenue;  accordingly,  revenue was down on the previous
year. For the Asia-Pacific region, which accounts for some 40% of the division's
revenue,  strong growth in market demand  continued,  and revenue grew robustly,
though the year-on-year rate of growth moderated in the second quarter.

Trading  profit of GBP20.9  million  for the first half of 2005 was down  GBP3.6
million (14%) on the previous year at both reported and constant exchange rates,
with the majority of the  shortfall  (GBP2.9  million)  arising in the Laminates
sector. As a consequence, return on sales decreased from 8.0% to 6.8%.

Profits in the second  quarter of 2005 of GBP12.5  million  were GBP1.1  million
lower than the second quarter last year due to losses in the Laminates sector.

A number of  cost-saving  initiatives  were put in place in the  first  half for
which rationalisation charges of GBP6.0 million were recognised in the period as
detailed under each sector below.

Assembly Materials
                            First Half                       Year
                       2005             2004                 2004
Revenue (GBPm)          139              135                  280
Trading profit (GBPm)  11.2             11.0                 24.2
Return on sales        8.1%             8.1%                 8.6%


Some 70% of the products of the Assembly  Materials sector are sold into the PCB
assembly and semi-conductor  packaging markets of the electronics industry, with
the balance for industrial and medical applications.  Revenue for the sector was
up 3% and by 4% at constant exchange rates over the previous year. However, most
of this  increase  related to higher tin prices  being  passed  onto  customers,
reducing  the  underlying  rate of  increase  to  approximately  1% at  constant
exchange rates. The average price of tin in the first half was c. 7.5% higher in
sterling  terms than the same period last year  though,  by the end of the first
half of 2005,  the tin price was similar to that at the end of the first half of
2004. Tin is the primary raw material used in the manufacture of the majority of
the  sector's  products  and the  cost  of tin in the  first  half  of 2005  was
equivalent  to some 35% of the  sector's  revenue.  Revenue  for the core solder
products range grew strongly in the Asia-Pacific region (some 45% of the total),
but   decreased   in  the  NAFTA  and  European   operations,   and  revenue  of
semi-conductor  packaging  products for the Asia-Pacific  market was down on the
previous year.

Trading  profit for the sector of GBP11.2  million was up 2% versus the previous
year at reported and constant  exchange  rates.  Improvements  in profits in the
core solder products and speciality coating  operations were achieved,  however,
this was held back by lower profits from the  semi-conductor  packaging products
business.

A one-off  rationalisation  charge of GBP0.6 million has been taken to cover the
costs of reducing the workforce of semi-conductor packaging activity in Asia and
for the completion of similar programmes initiated in Europe last year.

Chemistry
                                   First Half                     Year
                             2005             2004                2004
Revenue (GBPm)                105              107                 213
Trading profit (GBPm)        11.9             12.8                27.8
Return on sales              11.3%            12.0%              13.1%



The  Chemistry  sector's  products  are  primarily  plating  chemicals  for  PCB
fabrication  and the general  electronics  industry and, in equal  measure,  for
other  industrial  and  automotive  applications.  Revenue for the sector was 2%
lower than the first half of 2004 at reported and constant  exchange  rates.  In
the NAFTA operations,  which account for some 30% of the total, revenue was well
down on the previous  year,  mainly due to weak demand for PCB related  products
and temporary  de-stocking in the first quarter by the sole  distributor of high
margin copper damascene products for the semi-conductor  market. This followed a
build up in  inventory  of this  product  in the  fourth  quarter  of 2004.  The
underlying  demand  for  copper  damascene,  however,  remains  healthy  and the
over-stocking in the first quarter was cleared by the end of the second quarter.
Revenue in the European operations, which account for some 50% of the total, was
up on last year with growth in products for the automotive market a feature.  In
the  Asia-Pacific  region,  revenue was  unchanged,  mainly due to a decrease in
sales of lower margin industrial products offsetting growth in those directed at
the PCB market.

The fall in  revenue  in the  high  margin  copper  damascene  products  and the
generally weak performance in the NAFTA  operations  resulted in profits in that
region being well down on last year,  offsetting  strong increases in profits in
the European and Asia-Pacific  operations.  As a result,  trading profit for the
sector of  GBP11.9  million  in the first  half was 7% down on 2004 at  reported
exchange  rates  but  only 4% down at  constant  exchange  rates.  Cost  savings
initiatives  in Europe and the USA, as outlined in the  strategy  update  above,
resulted in a one-off rationalisation charge of GBP1.5 million.

Laminates
                             First Half                       Year
                       2005              2004                 2004
Revenue (GBPm)           65                66                  132
Trading profit (GBPm)  (2.2)              0.7                  0.8
Return on sales       (3.4)%             1.1%                 0.6%

Following an increase in revenue in the first  quarter of 2005 over the previous
year,  revenue in the second quarter plateaued and, as a result,  was down 8% on
the strong  volumes  experienced  in the second  quarter of last year.  This, in
turn, resulted in revenue for the first half at reported exchange rates being 2%
lower than that of the first half of 2004,  though  unchanged at constant rates.
Revenue in the US and European  operations,  which collectively account for some
50% of the total, was well down on the previous year,  offsetting  strong growth
in the  Asia-Pacific  operations.  This  fall  in  revenue  arose  despite  some
increases in prices to cover higher raw  material  costs.  Volumes of the higher
margin  products,  such as  GETEK(TM)  and  other  high  temperature/reliability
laminates,  held up well.  As a consequence  of the fall in revenue,  the sector
recorded an  operating  loss of GBP2.2  million in the first half in  comparison
with a profit of GBP0.7  million in the same period last year. The US operations
recorded  an  unchanged  loss  versus that of the  previous  year,  Asia-Pacific
remained  profitable whereas the European  operations moved from break-even into
heavy loss.

As outlined  previously,  a number of  initiatives  are  underway to improve the
sector's profitability. These include a programme to increase the level of sales
of higher  margin  products,  to increase  capacity  further in the fast growing
Asia-Pacific  region and to rationalise  activities in Germany and Sweden.  With
regard to the latter,  this  programme  is well  underway and a charge of GBP3.9
million  for  this  and the  completion  of  initiatives  in the  USA  has  been
recognised in the first half. Precious Metals division

                                  First Half                     Year
                            2005             2004                2004
Revenue (GBPm)               118              151                 288
Net Sales Value (GBPm)        47               60                 116
Trading profit (GBPm)        2.7              3.8                11.0
Return on net sales value   5.7%             6.3%                9.5%


Trading  conditions for the Precious Metals division  remained  difficult in the
first half due to unprecedented falls in demand for jewellery products in the UK
and  Continental  Europe,  which  collectively  account  for  some  45%  of  the
division's  activities,  together with weak consumer confidence in these regions
and in the USA. As a result,  revenue for the division was down 22% in the first
half at reported and 21% at constant  exchange  rates and,  after  excluding the
precious metals content,  net sales value was also down 21% at constant exchange
rates.  Demand for the division's  higher margin  gold-based  products  remained
weak,  especially in the UK where hallmarking of gold jewellery items has fallen
by 16% in the first half,  though  volumes of  relatively  lower  margin  silver
products was less  affected.  Trading  profit for the division of GBP2.7 million
was well down on last year at both reported and constant exchange rates,  though
the decrease in profits was partially  mitigated by the benefits of the recently
completed  restructuring of the European operations that commenced in 2004. As a
result,  the  return  on net  sales  value was down  only  0.6%.  As  previously
reported,  in response to the weak market  conditions  in the USA and to Tiffany
increasing its level of in-house manufacturing, a programme was initiated in the
second  quarter  to  reduce  the US  workforce  by 8% and  to  consolidate  most
activities  in the region onto a single site. As a result,  a one-off  charge of
GBP0.6 million has been raised in the first half.

Group Corporate

The Group's  corporate  costs,  being the costs directly related to managing the
Group holding  company,  were GBP3.6  million in the first half which was GBP0.5
million lower than 2004. Costs for the full year 2004 amounted to GBP8.9 million
and,  following a programme to streamline  activities,  the expectation is for a
further year-on-year decrease in costs in the second half.

GROUP FINANCIAL REVIEW
                                             First Half               Year
                                       2005             2004          2004
Profit Before Tax (GBPm)
- headline                             39.9             37.2          85.0
- basic                                33.3             24.1          12.6

Earnings per share (pence)
- headline                             13.9             12.4          30.1
- basic                                 8.5              4.4         (11.2)

Free cash flow (GBPm)                 (22.8)           (21.2)         51.6
Net debt (GBPm)                         363              402           322


Profit before tax

Headline profit before tax was GBP39.9 million for the first half of 2005, which
was GBP2.7  million  higher than the same period in 2004.  The increase arose as
follows:

- GBP2.6 million increase in trading profit at constant exchange rates for Group
  operations, as analysed in the Review  of Operations above
- GBP0.1 million negative trading profit exchange rate translation variance
- GBP1.1 million lower charge for net interest payable for ongoing activities 
  mainly due to a decrease of some GBP35 million in the average level of 
  borrowings (average rates on gross borrowings were 7.0% in the first half) 
  partly offset by:
- GBP0.9 million decrease in income from joint ventures from GBP1.3 million to 
  GBP0.4 million, primarily in the Chemistry sector's Japanese joint venture; 
  this shortfall was anticipated following an exceptionally high level of
  profitability in the first quarter of 2004.

A net charge for the following items not related to trading profit  amounting to
GBP6.6  million was incurred in the first half of 2005 (2004:  GBP9.9  million).
This consisted of the following:

- one-off rationalisation costs of GBP7.7 million (2004: GBP11.0 million), of 
  which GBP4.0 million related to a non-cash write down of assets.
- amortisation of intangibles of GBP0.4 million
- profit on disposal of surplus properties of GBP1.6 million (2004: 
  GBP1.1 million).
- GBP1.2 million write-off of prior period debt refinancing costs.
- GBP1.1 million profit on disposal of operations

Group profit before tax and after the above items amounted to GBP33.3 million in
the first half of 2005.  This compares  with GBP24.1  million in the same period
last year.

Taxation

The tax charge and effective tax rate for ongoing activities was GBP11.9 million
and 30%  respectively  (2004:  30%).  A tax charge of GBP3.5  million  arose for
exceptional items.

Earnings per share

Headline  earnings  per share  amounted  to 13.9  pence per share  which was 12%
higher than the 12.4 pence per share in 2004.

Basic  earnings  per share  amounted to 8.5 pence per share,  compared  with 4.4
pence per share in 2004.

The calculation of earnings per share is based on 188 million shares in issue in
both  periods and takes into  account the 1 for 10 share  capital  consolidation
that was approved by shareholders and effected in May 2005.

Dividends

While no  dividends  have been  declared  for the first half of 2005,  it is the
Board's  intention  to return to the  dividend  list as soon as  possible,  with
dividends paid on a sustainable basis from free cash flow.

Cash flow

Net cash from operating activities

In the  first  half of  2005,  the  Group's  net  cash  outflow  from  operating
activities was GBP16.8 million,  GBP7.0 million higher than in the first half of
2004, with the net increase made up as follows:

- GBP2.6 million higher cash outlay for rationalisation of activities
- GBP0.4 million increase in tax payments, and
- GBP17.9 million net outlay for other operating provisions and other items, 
  including GBP2.5 million higher payments to "top-up" the UK and US defined 
  benefits pension funds and GBP6.0m additional incentive payments to employees 
  throughout the Group, with the remainder arising from movements on other 
  non-trading debtors and creditors partly offset by:
- GBP2.6 million higher profit from operations after the add-back of non-cash 
  items
- GBP10.8 million lower cash outflow for trade working capital.
- GBP0.5 million less net interest paid.

Cash outflow for  rationalisation  was GBP8.1  million of which  GBP3.0  million
related to  programmes  that were  initiated  in 2005 and the balance from prior
period  initiatives,  with the largest being the  restructuring  of the European
Precious Metals activities and the Laminates operations in Germany.

Trade  working  capital rose by GBP42.8  million in the first half, a consistent
seasonal trend to that of the prior year (up GBP53.6 million) and in years prior
to that. The ratio of average  working  capital to sales was  marginally  higher
than the same period last year at 21.4%.

Net cash from investing activities

Capital  expenditure.  Payments to acquire property,  plant and equipment in the
first half of 2005 were GBP13.8  million which  represented  58% of depreciation
(2004:  61%).  Proceeds  from the sale of redundant  properties,  in the USA and
France, were GBP5.7 million (2004: GBP2.9 million).

Dividends from joint ventures.  Dividends of GBP4.7 million were received in the
first half (2004:  GBP2.2 million) from the Chemistry  division's Japanese joint
venture.

Acquisitions and disposals.

Net cash outflow for  acquisitions  and  disposals in the first half of 2005 was
GBP4.5 million which included the following:

- an increase in the Ceramics division's joint venture interest with Wuhan 
  Steel Corp in China from 25% to 50% for GBP2.3 million
- deferred consideration for prior period acquisitions of GBP1.6 million
- trailing costs and purchase price adjustments for prior period disposals of 
  GBP3.7 million
- proceeds from the disposal of businesses, net of cash, of GBP2.4 million

Free cash flow

Free cash flow is defined as net cash flow from operating  activities  after net
outlays for  acquisitions  and disposals of fixed assets,  dividends  from joint
ventures and dividends paid to minority shareholders.

Free cash  outflow  for the first  half of 2005 was  GBP22.8  million  which was
GBP1.6  million  higher  than the GBP21.2  million  outflow in the first half of
2004.

The Group traditionally  experiences free cash outflows in the first half of the
year.  This is then  followed by inflows in the second  half,  mainly due to the
seasonality  of trade working  capital cash flows and generally  higher  trading
profits in the second half. The  annualised  free cash inflow for the year ended
June 2005,  was GBP50.0  million.  This compares  with the GBP51.6  million cash
inflow in the year ended December 2004.

Net cash flow before financing and net debt

Net cash outflow before financing for the first half of 2005 was GBP24.7 million
and, together with a GBP3.1 million outflow for financing  activities,  net cash
outflow for the first half was GBP27.8 million.  This,  together with a negative
translation exchange rate effect of GBP13.2 million,  mainly due to the decrease
in the value of sterling from $1.92 to $1.83 over the six month period, resulted
in net debt rising from GBP321.8  million at 31 December 2004 (restated to IFRS)
to  GBP362.8  million  in the  first  half of 2005.  However,  net debt is GBP39
million lower than in June 2004.

As at 30 June 2005, the Group had gross  borrowings of GBP394 million which were
drawn on  available  medium  to  long-term  committed  facilities  of c.  GBP500
million. The Group's net debt comprises the following:


                                                                    30 June      31 December           30 June
                                                                       2005             2004             2004
                                                                       GBPm             GBPm             GBPm
                                                                                                 
US Private Placement loan notes                                         298              297              312
7% Convertible Bonds                                                      -                -               80
Committed bank facility                                                  68               40               10
Other loans                                                              14               16               17
Asset securitisation and lease financing                                 15               13               15
Gross borrowings                                                        395              366              434
Cash                                                                   (32)             (44)             (32)
Net Debt                                                                363              322              402


The US Private  Placement  loan notes ($570  million)  are  repayable at various
dates between 2007 and 2012. $25 million of notes were repaid on maturity in May
2005.

A new unsecured committed bank facility for GBP200 million was arranged in March
2005 on improved  pricing and terms.  The facility  matures in March 2008,  with
options  to extend by a further 2 years.  Only GBP68  million  was drawn on this
facility at June 2005.

PENSION FUND AND OTHER POST-RETIREMENT OBLIGATIONS

At 30 June 2005, a liability  of GBP213.6  million is  recognised  in respect of
employee  benefits;  an increase of GBP23.7 million over the GBP189.9 million as
at 31 December 2004. This increase results from an interim  actuarial  valuation
of the Group's defined benefit pension and other post-retirement  obligations as
at 30 June  2005.  Of the  total  liability,  GBP166.8  million  relates  to the
combined deficits on the Group's principal defined pension schemes in the UK and
the USA,  GBP12.7 million to pension  arrangements in the Rest of the World, and
GBP34.1 million to unfunded  post-retirement benefit arrangements,  being mainly
healthcare benefit arrangements in the USA.

The valuations  represent a "roll-forward"  from the last full individual scheme
valuations  which, in the case of the UK pension  scheme,  was 31 December 2003,
and for the US pension  schemes was 31 December  2004. For the UK and US pension
schemes,  the  principal  component of the  increase in the  combined  valuation
deficit  in the  first  half  of  2005  resulted  from  a  change  in  actuarial
assumptions,  namely a reduction in discount rates. For valuation purposes,  the
discount  rates used were 5.0% for the UK (December  2004:  5.25%) and 5.25% for
the USA (December 2004: 5.75%). 

The total charge to the income  statement  for the first half of 2005 in respect
of the Group's defined benefit pension and other post-retirement obligations was
GBP7.9 million (2004: half year GBP8.0 million; full year GBP15.6 million).

Shareholder/analyst enquiries:
Nick Salmon, Chief Executive                       Cookson Group plc
Dennis Millard, Group Finance Director             Tel: + 44 (0)20 7061 6500
Isabel Vilela, Investor Relations Manager

Press enquiries:
John Olsen                                         Hogarth Partnership
                                                   Tel: +44 (0)20 7357 9477

Cookson  management  will make a presentation  to analysts on 26 July at 9:30 am
(UK   time).    This   will   be   broadcast   live   on   Cookson's    website,
www.cooksongroup.co.uk. An archive version of the presentation will be available
on the website later that day.

Forward Looking Statements

This report contains  certain forward looking  statements  regarding the Group's
financial condition,  results of operations,  cash flows,  dividends,  financing
plans,  business  strategies,  operating  efficiencies  or  synergies,  budgets,
capital and other expenditures,  competitive positions, growth opportunities for
existing  products,  plans and  objectives  of  management  and  other  matters.
Statements in this document that are not historical facts are hereby  identified
as "forward looking  statements" for the purpose of the safe harbour provided by
Section 21E of the  Exchange  Act and Section 27A of the  Securities  Act.  Such
forward looking statements, including, without limitation, those relating to the
future business prospects,  revenues, working capital, liquidity, capital needs,
interest costs and income, in each case relating to Cookson, wherever they occur
in this document,  are necessarily based on assumptions  reflecting the views of
Cookson and involve a number of known and unknown risks, uncertainties and other
factors that could cause actual  results,  performance or achievements to differ
materially from those  expressed or implied by the forward  looking  statements.
Such forward looking  statements  should,  therefore,  be considered in light of
various important factors.  Important factors that could cause actual results to
differ materially from estimates or projections contained in the forward looking
statements include without  limitation:  economic and business cycles; the terms
and  conditions  of Cookson's  financing  arrangements;  foreign  currency  rate
fluctuations;  competition  in  Cookson's  principal  markets;  acquisitions  or
disposals of businesses or assets; and trends in Cookson's principal industries.

The  foregoing  list of  important  factors is not  exhaustive.  When relying on
forward  looking  statements,  careful  consideration  should  be  given  to the
foregoing  factors  and  other  uncertainties  and  events,  as well as  factors
described in documents the Company files with the UK and US regulators from time
to time including its annual reports and accounts.

Such  forward  looking  statements  speak  only as of the date on which they are
made. Except as required by the Rules of the UK Listing Authority and the London
Stock Exchange and applicable  law,  Cookson  undertakes no obligation to update
publicly or revise any forward  looking  statements,  whether as a result of new
information,  future events or otherwise. In light of these risks, uncertainties
and  assumptions,  the forward looking events discussed in this report might not
occur.

Cookson Group plc
265 Strand, London WC2R 1DB, United Kingdom
Tel: +44 (0) 20 7061 6500 Fax: +44 (0) 20 7061 6600 www.cooksongroup.co.uk
Registered in England & Wales No. 251977

Independent review report to Cookson Group plc


Introduction

We have been engaged by the company to review the financial  information set out
on  pages 17 to 25 and we have  read  the  other  information  contained  in the
interim report and considered whether it contains any apparent  misstatements or
material inconsistencies with the financial information.

This report is made solely to the  company in  accordance  with the terms of our
engagement  to assist the  company in meeting  the  requirements  of the Listing
Rules of the Financial  Services  Authority.  Our review has been  undertaken so
that we might state to the company  those matters we are required to state to it
in this report and for no other purpose. To the fullest extent permitted by law,
we do not accept or assume  responsibility  to anyone other than the company for
our review work, for this report, or for the conclusions we have reached.

Directors' responsibilities

The interim report,  including the financial  information  contained therein, is
the responsibility of and has been approved by the directors.  The directors are
responsible  for  preparing the interim  report in  accordance  with the Listing
Rules which require that the accounting policies and presentation applied to the
interim  figures  should be  consistent  with  those  applied in  preparing  the
preceding annual financial  statements except where any changes, and the reasons
for them, are disclosed.

As disclosed in note 1 to the financial  information,  the next annual financial
statements  of the group will be prepared in  accordance  with IFRSs adopted for
use in the European Union.

The  accounting  policies  that have been  adopted in  preparing  the  financial
information are consistent with those that the directors currently intend to use
in the next annual financial  statements.  There is, however, a possibility that
the directors may  determine  that some changes to these  policies are necessary
when  preparing  the full  annual  financial  statements  for the first  time in
accordance  with those IFRSs  adopted  for use by the  European  Union.  This is
because,  as disclosed in note 1, the directors  have  anticipated  that certain
standards,  which have yet to be formally  adopted for use in the EU, will be so
adopted in time to be applicable to the next annual financial statements.

Review work performed

We conducted our review in accordance with guidance contained in Bulletin 1999/4
Review of interim financial  information  issued by the Auditing Practices Board
for use in the United Kingdom. A review consists principally of making enquiries
of  group  management  and  applying  analytical  procedures  to  the  financial
information and underlying financial data and, based thereon,  assessing whether
the accounting  policies and presentation have been consistently  applied unless
otherwise  disclosed.  A review  is  substantially  less in scope  than an audit
performed in accordance with Auditing  Standards and therefore  provides a lower
level of  assurance  than an  audit.  Accordingly,  we do not  express  an audit
opinion on the financial information.

Review conclusion

On the basis of our review we are not aware of any material  modifications  that
should be made to the  financial  information  as  presented  for the six months
ended 30 June 2005.


KPMG Audit Plc
Chartered Accountants
26 July 2005, London

Group Income Statement
For the six months ended 30 June 2005


                                                                                                           Half year         Full
                                                                                                Half year       2004    Year 2004
                                                                                         Note   2005 GBPm       GBPm         GBPm
                                                                                                                  
Revenue                                                                                     2       794.7       816.7    1,652.5
Manufacturing costs- raw materials                                                                (359.5)     (364.3)    (755.8)
                   - other                                                                        (218.3)     (226.2)    (447.1)
Administration, selling and distribution costs                                                    (162.5)     (174.3)    (334.7)

Trading profit                                                                            1,2        54.4        51.9      114.9

Rationalisation of operating activities                                                     3       (7.7)      (11.0)     (22.7)
Amortisation and impairment of intangibles                                                          (0.4)       (0.4)      (0.8)
Profit/(loss) relating to fixed assets                                                                1.6         1.1     (16.8)

Profit from operations                                                                      2        47.9        41.6       74.6

Finance income:                                                                             4
        Ongoing activities                                                                            1.4         1.7        3.4
        Income from swap close-out                                                                      -         2.7        5.4

Finance costs:                                                                              4
        Ongoing activities                                                                         (16.3)      (17.7)     (35.6)
        Write-off of prepaid debt-raising fees                                                      (1.2)           -          -

Share of post-tax profit from joint ventures                                                          0.4         1.3        2.3
Profit/(loss) on disposal of operations                                                     5         1.1       (5.5)     (37.5)

Profit before tax                                                                                    33.3        24.1       12.6

Income tax costs:                                                                           6
        Ongoing activities                                                                         (11.9)      (11.3)     (24.3)
        Other income tax costs                                                                      (3.5)       (2.0)      (5.3)

Profit/(loss) for the period                                                                         17.9        10.8     (17.0)

Profit attributable to minority interests                                                           (1.8)       (2.5)      (4.1)

Profit/(loss) attributable to parent company equity holders                                          16.1         8.3     (21.1)


Basic earnings per share                                                                    7        8.5p        4.4p    (11.2)p

Diluted earnings per share                                                                  7        8.3p        4.3p    (11.2)p

Headline profit before tax and earnings per share

Trading profit                                                                                       54.4        51.9      114.9
Share of post-tax profit from joint ventures                                                          0.4         1.3        2.3
Finance costs of ordinary activities, net                                                          (14.9)      (16.0)     (32.2)

Headline profit before tax                                                                           39.9        37.2       85.0

Income tax on ordinary activities                                                                  (11.9)      (11.3)     (24.3)
Profit attributable to minority interests                                                           (1.8)       (2.5)      (4.1)

Headline profit attributable to parent company equity holders                                        26.2        23.4       56.6


Headline basic earnings per share                                                           7       13.9p       12.4p      30.1p





Group Statement of Cash Flows
For the six months ended 30 June 2005


                                                                                          Half year    Half year      Full year
                                                                                               2005         2004           2004
                                                                                    Note       GBPm         GBPm           GBPm
                                                                                                                
Cash flows from operating activities
Profit from operations                                                                         47.9         41.6           74.6
Add/(deduct):
    Rationalisation of operating activities                                                     7.7         11.0           22.7
    (Profit)/loss relating to fixed assets                                                    (1.6)        (1.1)           16.8
    Amortisation of intangibles                                                                 0.4          0.4            0.8
    Depreciation                                                                               23.9         23.8           46.9
    Net increase in trade working capital                                                    (42.8)       (53.6)         (16.9)
    Outflows related to rationalisation of operating activities                        3      (8.1)        (5.5)         (14.2)
    Other items                                                                              (20.4)        (2.5)           14.8
Cash generated from operations                                                                  7.0         14.1          145.5

Interest paid                                                                                (16.6)       (17.8)         (35.9)
Interest received                                                                               1.8          2.5            4.4
Income taxes paid                                                                             (9.0)        (8.6)         (20.7)

Net cash (outflow)/inflow from operating activities                                          (16.8)        (9.8)           93.3

Cash flows from investing activities
Acquisition of property, plant and equipment                                                 (13.8)       (14.4)         (42.3)
Proceeds from sale of property, plant and equipment                                             5.7          2.9            1.4
Acquisition of subsidiaries, net of cash acquired                                             (3.9)        (4.5)         (12.0)
Disposal of subsidiaries, net of cash disposed of                                               2.4        (2.4)            1.4
Dividends received from joint ventures                                                          4.7          2.2            2.3
Other, including additional costs for prior years' disposals                                  (3.0)        (5.1)         (10.0)

Net cash outflow from investing activities                                                    (7.9)       (21.3)         (59.2)


Net cash (outflow)/inflow before financing activities                                        (24.7)       (31.1)           34.1

Cash flows from financing activities
Increase in/(repayment of) borrowings                                                          15.1         12.3         (39.7)
Proceeds from the issue of share capital                                                        0.1          0.8            0.9
Payment of transaction costs                                                                  (0.6)        (1.1)          (1.1)
Dividends paid to minority shareholders                                                       (2.6)        (2.1)          (3.1)

Net cash inflow/(outflow) from financing activities                                            12.0          9.9         (43.0)

Net decrease in cash and cash equivalents                                                    (12.7)       (21.2)          (8.9)
Cash and cash equivalents at 1 January                                                         44.0         52.8           52.8
Effect of exchange rate fluctuations on cash held                                               0.2        (0.1)            0.1

Cash and cash equivalents at end of period                                                     31.5         31.5           44.0


Free cash flow
    Net cash (outflow)/inflow from operating activities                                      (16.8)        (9.8)         93.3
    Acquisition of property, plant and equipment                                             (13.8)       (14.4)       (42.3)
    Proceeds from sale of property, plant and equipment                                         5.7          2.9          1.4
    Dividends received from joint ventures                                                      4.7          2.2          2.3
    Dividends paid to minority shareholders                                                   (2.6)        (2.1)        (3.1)

Free cash flow                                                                               (22.8)       (21.2)         51.6


Group Balance Sheet
As at 30 June 2005
                                                                                            30 June        31 Dec       30 June
                                                                                               2005          2004          2004
                                                                                  Note         GBPm          GBPm          GBPm
Assets

   Property, plant and equipment                                                              312.8         322.9         335.7
   Intangible assets                                                                 8        497.0         485.2         503.5
   Investments in joint ventures                                                               12.9          14.7          14.5
   Other investments                                                                 9         13.8          16.7          36.0
   Income tax recoverable                                                                       2.2           2.2           2.2
   Deferred tax assets                                                                         27.3          31.2          46.9
   Other assets                                                                                 7.4          10.6          10.1

Total non-current assets                                                                      873.4         883.5         948.9

   Cash and cash equivalents                                                                   31.5          44.0          31.5
   Inventories                                                                                186.1         174.1         193.9
   Trade and other receivables                                                                330.0         303.4         324.8
   Income tax recoverable                                                                       0.7           0.9             -
   Other financial assets                                                           10         13.4             -             -

Total current assets                                                                          561.7         522.4         550.2

Total assets                                                                                1,435.1       1,405.9       1,499.1

Equity

   Issued share capital                                                             11        375.5         375.5         375.4
   Share premium                                                                              643.8         643.4         643.4
   Reserves                                                                                 (563.1)       (587.5)       (560.4)

Total parent company shareholders' equity                                                     456.2         431.4         458.4

Minority interests                                                                             11.3          11.7          11.7

Total equity                                                                                  467.5         443.1         470.1

Liabilities

   Interest-bearing loans and borrowings                                                      370.3         326.1         334.0
   Employee benefits                                                                12        213.6         189.9         188.8
   Trade and other payables                                                                    24.4          58.3          97.9
   Provisions                                                                                   9.4          10.3          16.8
   Deferred tax liabilities                                                                    15.3           8.6          11.5

Total non-current liabilities                                                                 633.0         593.2         649.0

   Interest-bearing loans and borrowings                                                       24.0          39.7          99.5
   Trade and other payables                                                                   283.8         303.2         247.2
   Income tax payable                                                                          13.4          11.6          15.8
   Provisions                                                                                  13.2          15.1          17.5
   Other financial liabilities                                                                  0.2             -             -

Total current liabilities                                                                     334.6         369.6         380.0

Total liabilities                                                                             967.6         962.8       1,029.0

Total equity and liabilities                                                                1,435.1       1,405.9       1,499.1


Net debt
   Interest-bearing loans and                                                                                                   
   borrowings                        - non current                                            370.3         326.1       334.0   
                                     - current                                                 24.0          39.7        99.5
   Cash and cash equivalents                                                                 (31.5)        (44.0)      (31.5)

Net debt                                                                                      362.8         321.8       402.0

Group Statement of Recognised Income and Expenses
For the six months ended 30 June 2005
                                                                                         Half year      Half year    Full year
                                                                                         2005 GBPm      2004 GBPm    2004 GBPm

Opening Group reserves adjustment (note 1)                                                    19.2             -            -
Foreign exchange translation differences                                                       8.1        (23.5)       (12.0)
Actuarial loss on employee benefit schemes                                                  (21.8)        (15.9)       (26.8)
Changes in fair value of equity securities available for sale                                  1.9             -            -

Income/(expenses) recognised directly in equity                                                7.4        (39.4)       (38.8)

Profit/(loss) for the period                                                                  17.9          10.8       (17.0)

                                                                                              25.3        (28.6)       (55.8)

Profit attributable to minority interests                                                    (1.8)         (2.5)        (4.1)
Foreign exchange translation differences attributable to minority interests                  (0.4)           0.5          1.1
                                                                                             (2.2)         (2.0)        (3.0)
                                                                                                               >
Total recognised income and expenses attributable to parent company equity shareholders       23.1        (30.6)       (58.8)




Group Reconciliation of Movements in Equity
For the six months ended 30 June 2005


                                                                                           Total equity                          
                                                                                           attributable                          
                                                        Issued                                to parent                          
                                                         share        Share                     company    Minority        Total
                                                       capital      premium    Reserves  equity holders    interest       equity
                                                          GBPm         GBPm        GBPm            GBPm        GBPm         GBPm
                                                                                                           
Total equity as at 1 January 2004                        375.4        642.6     (530.9)           487.1        11.8        498.9

  Movements for the period:
  Total net recognised losses relating to the                                                                                    
  period                                                     -            -      (30.6)          (30.6)         2.0       (28.6)
  New share capital issued                                   -          0.8           -             0.8           -          0.8
  Share-based payments                                       -            -         1.1             1.1           -          1.1
  Dividends paid to minority interests                       -            -           -               -       (2.1)        (2.1)
                                                             -          0.8      (29.5)          (28.7)       (0.1)       (28.8)

Total equity as at 30 June 2004                          375.4        643.4     (560.4)           458.4        11.7        470.1

Total equity as at 1 January 2004                        375.4        642.6     (530.9)           487.1        11.8        498.9

  Movements for the period:
  Total net recognised losses relating to the                                                                                    
  period                                                     -            -      (58.8)          (58.8)         3.0       (55.8)
  New share capital issued                                 0.1          0.8           -             0.9           -          0.9
  Share-based payments                                       -            -         2.2             2.2           -          2.2
  Dividends paid to minority interests                       -            -           -               -       (3.1)        (3.1)
                                                           0.1          0.8      (56.6)          (55.7)       (0.1)       (55.8)

Total equity as at 31 December 2004                      375.5        643.4     (587.5)           431.4        11.7        443.1

Total equity as at 1 January 2005                        375.5        643.4     (587.5)           431.4        11.7        443.1

  Movements for the period:
  Total net recognised gains relating to the                                                                                     
  period                                                     -            -        23.1            23.1         2.2         25.3
  New share capital issued                                   -          0.4           -             0.4           -          0.4
  Share-based payments                                       -            -         1.3             1.3           -          1.3
  Dividends paid to minority interests                       -            -           -               -       (2.6)        (2.6)

                                                             -          0.4        24.4            24.8       (0.4)         24.4

Total equity as at 30 June 2005                          375.5        643.8     (563.1)           456.2        11.3        467.5


Notes to the Accounts

1 Basis of preparation

The  consolidated  financial  statements  of Cookson Group plc in respect of the
current  period have been  prepared  on the  assumption  that all  International
Financial Reporting Standards ("IFRSs"), including interpretations issued by the
International   Financial  Reporting   Interpretations   Committee  and  by  the
International  Accounting Standards Board effective for 2005 reporting,  will be
endorsed by the  European  Commission,  notably the  amendments  made to IAS 19,
"Employee Benefits".  Endorsement of all such pronouncements has not occurred as
at the date of the  publication  of this  document.  The failure of the European
Commission  to endorse all of these  standards  in time for  Cookson's  year-end
financial  reporting  in 2005  could  result in the need to change  the basis of
accounting  or the  presentation  of  certain  financial  information  from that
presented in this document. It is possible, therefore, that further changes will
be  required  to  this  information   before  it  is  published  as  comparative
information for the full year 2005.

These  financial  statements  are  presented in  accordance  with  International
Accounting Standard ("IAS") 1, "Presentation of Financial Statements".  Where no
definitive guidance exists in IAS 1, a UK Generally Accepted Accounting Practice
("UK GAAP")  approach  has been  adopted in order to maintain  consistency  with
prior years. This format and presentation may require  modification in the event
that further  guidance is issued,  but otherwise  the Company  believes that the
basis on which these financial  statements have been prepared will be sufficient
to enable  it to be able to  comply  fully  with  IFRS in its  annual  financial
statements  for the year ended 31  December  2005  without  further  significant
modification to either the format and presentation or the comparative  financial
information contained herein.

A comprehensive  analysis and explanation of the adjustments made by the Company
to its  comparative  consolidated  financial  statements  on  transition  of its
accounting  policies  to IFRS  from  UK  GAAP,  as  disclosed  in the  Company's
statutory  annual  consolidated  accounts for 2004,  was announced to the London
Stock Exchange on 22 July 2005. A copy of this  announcement can be found on the
Company's  website and is obtainable  from the Group  Secretary at the Company's
registered address.

The financial information presented in this document is unaudited,  but has been
reviewed by the Company's auditor.

Opening Group reserves adjustment

A net  adjustment  to opening  Group  reserves of GBP19.2m  has been made in the
period, the major components being explained below.

As part of its  transition  to IFRS,  the Company has adopted for the purpose of
its  consolidated  Group  accounts,  with  effect from 1 January  2005:  IAS 32,
"Financial  Instruments:  Disclosure and  Presentation";  and IAS 39, "Financial
Instruments:  Recognition and  Measurement".  Comparative  figures have not been
amended in connection with these changes of accounting  policy,  as permitted by
IFRS 1. As a  consequence  of the  adoption  of IAS 32 and  IAS  39,  the  Group
accounts must recognise certain financial  instruments used in its operations at
fair  value.  The use of  financial  instruments  to any  significant  extent is
restricted mainly to the Group's central treasury operations, which uses forward
foreign  exchange  contracts  to  convert  the  currency  denomination  of  debt
instruments;  and interest rate swaps to switch debt  instruments  between fixed
and  floating   rates  of  interest.   In  addition,   certain  of  the  Group's
manufacturing  operations use commodity  forward purchase and sale contracts and
forward foreign exchange  contracts to hedge the impact on their trading results
of underlying movements in commodity prices and foreign currency rates.

In  accordance  with  the  requirements  of IAS 39,  the fair  value of  certain
financial  investments  at the end of the  reporting  period is reflected on the
Group balance sheet as either a "financial asset" or "financial liability", with
the  corresponding  charge  or credit  being  recognised  either  in the  income
statement  or through the Group  reserves.  As the  adoption of these  standards
represents a change in accounting  policy,  the impact of the adoption of IAS 39
as at 1 January  2005 has been  accounted  for as an  adjustment  to the opening
Group balance  sheet.  There was no impact to opening Group reserves as a result
of the adoption of these standards,  with interest-bearing  loans and borrowings
being  decreased  by GBP1.1m,  inventory  reduced by GBP1.2m and trade and other
receivables reduced by GBP0.2m.

As a  further  consequence  resulting  from the  adoption  of IAS 32 and IAS 39,
deferred income of GBP22.3m as at 1 January 2005, which was being carried on the
Group  balance sheet in respect of the close-out of interest rate swaps in prior
periods,  has been credited to opening Group reserves,  net of an associated tax
charge.  Under UK GAAP this  deferred  income was being  credited  to the income
statement over the term of the underlying  loan  arrangements to which the swaps
had related.

As a  consequence  of  adopting  IAS 39, the Group has  included  within  "other
investments"  as at 1 January 2005 two equity trade  investments at market value
and,  accordingly,  an opening  credit to Group  reserves  was  recognised  at 1
January 2005 of GBP2.5m to reflect this change.

Disclosure of significant items

IAS 1 provides no definitive  guidance as to the format of the income statement,
but states key lines which should be disclosed.  It also  encourages  additional
line  items and the  re-ordering  of items  presented  on the face of the income
statement when appropriate for a proper  understanding of the entity's financial
performance.  In keeping  with the spirit of this  aspect of IAS 1,  Cookson has
adopted a policy of disclosing  separately  on the face of its income  statement
the effect of any components of financial  performance  considered by management
to be significant  and/or for which separate  disclosure  would assist both in a
better  understanding  of the  financial  performance  achieved  and  in  making
projections of future results. Materiality and/or the nature and function of the
components  of  income  and  expense  are   considered  in  deciding  upon  such
presentation.  Such items may include,  inter alia, the financial  effect of any
profit or loss  arising on  business  disposals,  major  rationalisation  and/or
restructuring  activity,  profits  and  losses  on sale or  impairment  of fixed
assets,  amortisation and impairment of intangible and other non-current  assets
and other items,  including the taxation  impact of the  afore-mentioned  items,
which have a significant  impact on the Group's results of operations either due
to their size or nature.

On the face of the income statement, "trading profit" is separately disclosed as
a non-GAAP measure,  being defined as profit from operations before the costs of
rationalisation  of operations,  the profit or loss relating to fixed assets and
the amortisation and impairment of intangibles. Management believes that trading
profit is an important  measure of the  underlying  trading  performance  of the
Group.

2 Segment reporting

As  required  by IAS  14,  the  segment  analysis  of  the  Group's  results  by
division/sector  separately  includes central corporate costs,  representing the
central  costs of operating as a "plc" which are not  directly  attributable  to
individual segments.  Where the Group's central costs are directly  attributable
to segment  operations,  they have been  allocated  primarily  according  to the
relative sales  contribution of each continuing  operating segment to the total.
Inter-segment sales are not material in relation to total Group revenue, whether
analysed  by  division/sector  or by  geographic  location  of  operations.  The
contribution from acquisitions to revenue and profit from operations in 2005 and
2004 was not material.


                                                                          Half year              Half year              Full year
                                                                               2005                   2004                   2004
                                                                Revenue      Profit    Revenue      Profit    Revenue      Profit
                                                                   GBPm        from                   from                   from
                                                                         operations             operations             operations
By Division/sector                                                 GBPm        GBPm       GBPm        GBPm       GBPm        GBPm
                                                                                                            
Ceramics                                                          367.6        34.4      358.0        27.7      739.5        60.0
Electronics                                                       309.3        20.9      307.8        24.5      625.2        52.8
    Assembly Materials                                            139.0        11.2      134.8        11.0      280.2        24.2
    Chemistry                                                     105.1        11.9      106.8        12.8      213.2        27.8
    Laminates                                                      65.2       (2.2)       66.2         0.7      131.8         0.8

Precious Metals                                                   117.8         2.7      150.9         3.8      287.8        11.0
Group corporate costs                                                         (3.6)                  (4.1)                  (8.9)

Trading profit                                                                 54.4                   51.9                  114.9

Rationalisation of operating activities                                       (7.7)                 (11.0)                 (22.7)
Amortisation and impairment of intangibles                                    (0.4)                  (0.4)                  (0.8)
Profit/(loss) relating to fixed assets                                          1.6                    1.1                 (16.8)

Total Group                                                       794.7        47.9      816.7        41.6    1,652.5        74.6


Of the total cost of the  rationalisation  of  operating  activities  of GBP7.7m
(2004:  half year GBP11.0m;  full year  GBP22.7m),  GBP1.1m  related to Ceramics
(2004: half year GBP0.3m; full year GBP2.9m), GBP6.0m to Electronics (2004: half
year nil;  full year GBP9.9m) and GBP0.6m to Precious  Metals  (2004:  half year
GBP10.7m;  full year  GBP9.9m).  Of the  Electronics  costs of GBP6.0m,  GBP0.6m
related to Assembly Materials (2004: half year nil; full year GBP0.2m),  GBP1.5m
to Chemistry  (2004:  half year nil; full year GBP0.8m) and GBP3.9m to Laminates
(2004: half year nil; full year GBP8.9m).

The total  amortisation  and impairment of  intangibles  costs of GBP0.4m (2004:
half year GBP0.4m;  full year GBP0.8m),  related to the Laminates  sector within
Electronics.

Of the total profit relating to fixed assets of GBP1.6m (2004: half year GBP1.1m
profit;  full year GBP16.8m loss), nil related to Ceramics (2004: half year nil;
full year nil) GBP2.2m profit to Electronics (2004: half year GBP1.1m; full year
GBP1.1m) nil to Precious Metals (2004: half year nil; full year nil) and GBP0.6m
loss  related to Group  corporate  operations  (2004:  half year nil;  full year
GBP17.9m  loss).  Of the  Electronics  profit of  GBP2.2m,  GBP0.3m  related  to
Assembly  Materials (2004: half year nil; full year nil), nil to Chemistry (half
year GBP1.1m; full year GBP1.1m), and GBP1.9m to Laminates (2004: half year nil;
full year nil).



                                              Half year                         Half year                           Full year
                                                 2005                             2004                                2004
                                                            By                                By                                 By
                                    By location of    Customer         By location of   Customer         By location of    Customer
                                  Group operations    location       Group operations   location       Group operations    location
                                            Profit                             Profit                            Profit 
                                              from                               from                              from
                               Revenue  operations     Revenue   Revenue   operations    Revenue    Revenue  operations     Revenue
Geographical                      GBPm        GBPm        GBPm      GBPm         GBPm       GBPm       GBPm        GBPm       GBPm
                                                                                                    
Europe                           305.4        18.1       277.0     327.7         14.9      305.9      643.1        37.3      595.5
NAFTA                            290.1         8.6       280.7     310.3         10.5      298.6      623.9        21.5      599.9
Asia-Pacific                     163.6        24.6       186.5     148.0         23.8      167.9      315.9        49.8      366.0
Rest of the World                 35.6         3.1        50.5      30.7          2.7       44.3       69.6         6.3       91.1
Trading profit                                54.4                               51.9                             114.9

Rationalisation of operating                                                                                                       
activities                                   (7.7)                             (11.0)                            (22.7)            
Amortisation and impairment                                                                                                        
of intangibles                               (0.4)                              (0.4)                             (0.8)            
Profit/(loss) relating to                                                                                                          
fixed assets                                   1.6                                1.1                            (16.8)            


Total Group                      794.7        47.9       794.7     816.7         41.6      816.7    1,652.5        74.6    1,652.5



Of the total cost of the  rationalisation  of  operating  activities  of GBP7.7m
(2004:  half year GBP11.0m;  full year  GBP22.7m),  GBP5.3m was in Europe (2004:
half year  GBP10.7m;  full year  GBP16.7m),  GBP1.9m in NAFTA  (2004:  half year
GBP0.3m; full year GBP5.7m), nil in Asia-Pacific (2004: half year nil; full year
GBP0.3m)  and GBP0.5m in the Rest of the World (2004:  half year nil;  full year
nil).

The total  amortisation  and impairment of  intangibles  costs of GBP0.4m (2004:
half year GBP0.4m; full year GBP0.8m) was within NAFTA.

Of the total  profit  relating  to fixed  assets  of  GBP1.6m  (2004:  half year
GBP1.1m;  full year GBP16.8m loss),  GBP1.4m was in Europe (2004: half year nil;
full year nil), GBP0.2m in NAFTA (2004: half year nil; full year GBP17.9m loss),
and nil in Asia-Pacific (2004: half year GBP1.1m; full year GBP1.1m profit).

3 Rationalisation of operating activities

The rationalisation of operating  activities charge of GBP7.7m in the first half
of 2005  represents  the cost of a number of  initiatives  throughout  the Group
aimed at  reducing  the  Group's  cost base and  re-aligning  its  manufacturing
capacity.  Cash  costs of  GBP8.1m  were  incurred  in the first half of 2005 in
respect of the  rationalisation and redundancy  initiatives  commenced both this
year and in prior periods.

Of the GBP11.0m charge incurred in the first half of 2004, GBP10.7m related to a
programme to rationalise the Precious Metals division's French activities. Under
a Social Plan,  the programme  encompasses  the closure of 5  manufacturing  and
distribution  sites,  a headcount  reduction of 150 and the  realignment  of the
division's manufacturing capacity in Europe.

4 Finance income and costs

Disclosed separately on the face of the income statement as financial income for
the half year 2004 is GBP2.7m  (2004:  full year GBP5.4m) in respect of deferred
income  relating to interest rate swaps  close-out in prior years.  As stated in
note 1, on adoption of IAS 39 with effect  from 1 January  2005,  the  remaining
such  deferred  income on the Group  balance sheet was credited to opening Group
reserves.

Disclosed  separately on the face of the income  statement as financial costs is
GBP1.2m  (2004:  nil for half year and full year)  relating to the  write-off of
unamortised fees associated with the Company's GBP148m  multicurrency  revolving
credit facility,  which was replaced by a new GBP200m facility as announced on 1
March 2005.

5 Profit/(loss) on disposal of operations

The net profit on  disposal of  operations  of GBP1.1m in the first half of 2005
related  mainly to the  disposal of the  Group's  Technical  Ceramics  business,
formerly a part of the Ceramics division. The net loss in the first half of 2004
was  GBP5.5m,  of which  GBP5.3m  related  to the  winding-up  of the  Laminates
sector's  joint  venture  with  Fukuda.  The net loss for the full  year 2004 of
GBP37.5m also included the sale of the Ceramics division's  loss-making European
silica-zinc brick business at a loss of GBP33.2m.

6 Income tax

The total  charge for income tax of  GBP15.4m  for the first half of 2005 (2004:
half year GBP13.3m;  full year GBP29.6m) includes "other income tax costs" which
comprises  a charge of GBP1.6m in respect of the profit  arising on  disposal of
operations (2004: half year nil; full year GBP2.6m credit) and a charge relating
to deferred  tax on  goodwill of GBP1.9m  (2004:  half year  GBP2.1m;  full year
GBP4.1m),  representing  a charge  arising from the fact that goodwill for Group
accounts  purposes is no longer  amortised,  although  amortisation  charges are
still allowed as a deduction for tax purposes in certain  jurisdictions in which
Cookson operates. The comparative figures for the full year 2004 also include as
"other  income tax costs" a charge in respect of the net write-off of tax assets
and  provisions  of  GBP4.8m  (2004:  half  year  nil) and a credit  related  to
rationalisation costs of GBP1.0m (2004: half year GBP0.1m).

7 Earnings per share

Basic  earnings  per share are  calculated  using a  weighted  average of 188.5m
ordinary  shares in issue during the period (2004:  half year 188.4m;  full year
188.3m).  The ordinary shares held by the Group's  Employee Share Ownership Plan
("ESOP") have been excluded from the weighted average number of shares, as these
shares are held within retained earnings.  The ESOP held 1.2m ordinary shares as
at 30 June 2005 (2004:  half year 1.2m;  full year 1.2m).  Diluted  earnings per
share are calculated assuming conversion of outstanding  dilutive share options.
These  adjustments  give rise to an increase in average  ordinary shares of 4.3m
(2004:  half year: 5.7m; full year 5.8m). The number of ordinary shares in issue
as at 30 June 2005 was 189.7m (2004: half year 189.5m; full year 189.5m).

On the face of the Group income statement,  both earnings per share and headline
earnings  per share are  shown,  together  with the  calculation  of the  latter
measure.  The Directors  believe that the non-GAAP measure of headline  earnings
per share, gives the most appropriate measure of the underlying earning capacity
of the Group.

8 Intangible assets

As at 30  June  2005,  total  intangible  assets  of  GBP497.0m  (2004:  30 June
GBP503.5m; 31 December GBP485.2m) comprises goodwill of GBP490.1m (2004: 30 June
GBP495.8m;  31 December GBP478.3m) and other intangible assets of GBP6.9m (2004:
30 June GBP7.7m; 31 December GBP6.9m).  Goodwill is carried unamortised,  but is
subject to annual review for impairment. No impairment charge was made in either
the current or comparative  periods. The other intangible assets balance relates
to a perpetual  licensing agreement in the USA which is being amortised over its
estimated 10 year useful life.

9 Other investments

Other  investments  of  GBP13.8m  as at 30  June  2005  comprise  mainly  equity
securities  available for sale of GBP5.7m  (2004:  30 June nil; 31 December nil)
and  GBP3.3m  (2004:  30 June  GBP21.4m;  31  December  GBP3.1m) in respect of a
20-year revenue-sharing  arrangement with Electric Lightwave,  Inc. related to a
fibre optic cable  network in the USA,  for which an  impairment  write-down  of
GBP17.9m was recognised at 31 December 2004.  Other  investments at 30 June 2004
included GBP6.8m (2004: 31 December: GBP6.4m) in respect of monies held in Rabbi
Trusts in the USA which  are held to fund  certain  of the  Group's  US  pension
liabilities.  These assets are not recognised by IAS 19 as being pension assets.
On 1 January  2005,  the Group adopted IAS 32 and IAS 39, and as such GBP7.5m in
respect  of  monies  held in Rabbi  Trusts  have  been  disclosed  within  other
financial assets as at 30 June 2005 and held at fair value.

10 Other financial assets

As  described  in note 9 above,  with the  adoption  of IAS 32 and IAS 39 in the
current  period  GBP7.5m  in respect of monies  held in Rabbi  Trusts  have been
disclosed within other financial assets as at 30 June 2005. In addition, GBP5.9m
of derivative financial instruments yet to mature as at the end of the reporting
period  are  reflected  on the  Group  balance  sheet  as  financial  assets  in
accordance with the requirements of IAS 39.

11 Issued capital

At the  Company's  Annual  General  Meeting  held on 26 May  2005,  shareholders
approved a share  consolidation.  The share  consolidation took effect following
the  close of  business  on 26 May 2005,  with  shareholders  receiving  one new
ordinary share of 10p each for every 10 existing ordinary shares of 1p each held
at the close of business on 26 May 2005.  Trading in the new ordinary  shares of
10p commenced on 27 May 2005.

12 Employee benefits

The balance of GBP213.6m  in respect of  "Employee  benefits" as at 30 June 2005
results  from an interim  actuarial  valuation  of the Group's  defined  benefit
pension and other  post-retirement  obligations  as at that date (2004:  30 June
GBP188.8m;  31 December  GBP189.9m).  Of the total as at 30 June 2005, GBP166.8m
relates to the  combined  deficits  of the  Group's  principal  defined  pension
schemes in the UK and the USA (2004: 30 June GBP144.1m; 31 December GBP146.2m).
Of the  balance of the total as at 30 June 2005,  GBP12.7m  relates  to pension
arrangements   in  the   rest   of   the   world   and   GBP34.1m   relates   to
unfunded post-retirement   benefit   arrangements,   being  mainly   healthcare
benefit arrangements in the USA.

The valuation at 30 June 2005 represents a  "roll-forward"  from the date of the
last full individual scheme  valuations,  which was 31 December 2003 in the case
of the UK pension  scheme and 31 December 2004 for the US pension  schemes.  For
the UK and US pension  schemes,  the principal  component of the increase in the
combined  valuation  deficit  from 31 December  2004 to 30 June 2005 of GBP20.6m
resulted from a change in actuarial assumptions,  namely a reduction in discount
rates,  which  alone  represented  a GBP20.8m  addition to the  combined  scheme
liabilities.  For valuation purposes,  the discount rates used were 5.0% for the
UK (December 2004: 5.25%) and 5.25% for the USA (December 2004: 5.75%).

The total charge to the income  statement  for the first half of 2005 in respect
of the Group's defined benefit pension and other post-retirement obligations was
GBP7.9m (2004: half year GBP8.0m; full year GBP15.6m). 13 Exchange rates

The principal exchange rates used for the period were as follows:




                                                                                        At 30 June      At 30 June    At 31 Dec
                                                                                              2005            2004         2004
Average rate                                                                                  GBPm            GBPm         GBPm
                                                                                                                   
US dollar ($ per GBP)                                                                         1.87            1.82         1.83
Euro (EUR per GBP)                                                                            1.46            1.48         1.48
Singapore dollar (S$ per GBP)                                                                 3.09            3.10         3.09
Hong Kong dollar (HK$ per GBP)                                                               14.61           14.19        14.25
Japanese yen (YEN per GBP)                                                                     199             197          198
Chinese Renminbi (RMB per GBP)                                                               15.51           15.07        15.08


Period end rate

US dollar ($ per GBP)                                                                         1.83            1.83         1.92
Euro (EUR per GBP)                                                                            1.50            1.50         1.41
Singapore dollar (S$ per GBP)                                                                 3.06            3.13         3.15
Hong Kong dollar (HK$ per GBP)                                                               14.19           14.26        14.94
Japanese yen (YEN per GBP)                                                                     200             197          198
Chinese Renminbi (RMB per GBP)                                                               15.11           15.14        15.90



14 Financial information

The  interim  financial  statements  have  been  prepared  on the  basis  of the
accounting  policies adopted in the Group's audited statutory  accounts for 2004
except as stated in note 1. The interim  accounts  were approved by the Board of
Directors on 26 July 2005. The financial  information  for the six month periods
ended 30 June 2005 and 30 June 2004 is  unaudited  but has been  reviewed by the
Company's  auditor.  The  comparative  figures for the  financial  year ended 31
December 2004 are not the Company's  statutory accounts for that financial year.
Those accounts,  which were prepared under UK GAAP, have been reported on by the
Company's auditor and delivered to the Registrar of Companies. The report of the
auditor was  unqualified and did not contain a statement under section 237(2) or
(3) of the Companies Act 1985. These sections address whether proper  accounting
records have been kept,  whether the  Company's  accounts are in agreement  with
these  records and whether the auditor  has  obtained  all the  information  and
explanations necessary for the purposes of their audit.






                                                   SIGNATURE
                                                   Cookson Group plc



                                                   By:________________
                                                   Rachel Fell 
                                                   Assistant Company Secretary


                                                   Date: 26 July 2005