UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
For the month of February, 2004
SPIRENT plc
_____________________________________________________________________
(Translation of registrant's name into English)
Spirent House, Crawley Business Quarter, Fleming Way, Crawley, West Sussex
RH10 9QL, UK.
_____________________________________________________________________
(Address of principal executive offices)
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- ________
SCHEDULE 10
NOTIFICATION OF MAJOR INTERESTS IN SHARES
1. Name of company
SPIRENT PLC
2. Name of shareholder having a major interest
BARCLAYS PLC
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
SHAREHOLDER 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
Registered Holder Account Holding
designation
ALMLUFTTL-18409-CHASE MANHATTA ALMLUFTT 487,521
ASTEXMTTL-21359-CHASE NOMINEES ASTEXMTT 1,220,660
ASUKEXTTL-20947-CHASE MANHATTA ASUKEXTT 36,122,576
BARCLAYS CAPITAL NOMINEES LIMI 734,302
BARCLAYS TRUST CO AS EXEC/ADM 1,128
BLENTFUKQ-16344-CHASE MANHATTA BLENTFUK 279,176
BLENTPUKQ-16345-CHASE MANHATTA BLENTPUK 532,050
BLEQFDUKQ-16331-CHASE MANHATTA BLEQFDUK 246,435
BLEQPTUEA-16341-CHASE MANHATTA BLEQPTUE 1,610,786
BLEQPTUKQ-16341-CHASE MANHATTA BLEQPTUK 650,710
BLUKINTTL-16400-CHASE MANHATTA BLUKINTT 8,433,668
CHATRKTTL-16376-CHASE MANHATTA CHATRKTT 475,611
INVESTORS BANK AND TRUST CO. 527191 3,056,084
INVESTORS BANK AND TRUST CO. 536747 756,438
INVESTORS BANK AND TRUST CO. 552942 402,745
INVESTORS BANK AND TRUST CO. 573039 92,016
INVESTORS BANK AND TRUST CO. 585934 9,820
INVESTORS BANK AND TRUST CO. 595966 230,692
JPMORGAN CHASE BANK 540186 181,647
JPMORGAN CHASE BANK BTGF01IE 341,021
JPMORGAN CHASE BANK BTGF05IE 381,288
NORTHERN TRUST BANK - BGI SEPA 581610 274,022
NORTHERN TRUST BANK - BGI SEPA 584069 116,930
NORTHERN TRUST BANK - BGI SEPA 604162 41,732
R C GREIG NOMINEES LIMITED A/C BL1 161,919
R C GREIG NOMINEES LIMITED A/C CM1 40,458
R C GREIG NOMINEES LIMITED GP1 GP1 15,218
R C GREIG NOMINEES LIMITED SA1 SA1 18,461
UBS LIMITED 583996 446,293
ZEBAN NOMINEES LIMITED 4,780
TOTAL 57,366,187
5. Number of shares / amount of stock acquired
NOT NOTIFIED
6. Percentage of issued class
NOT NOTIFIED
7. Number of shares / amount of stock disposed
-
8. Percentage of issued class
-
9. Class of security
ORDINARY SHARES OF 3.3333 PENCE EACH
10. Date of transaction
NOT NOTIFIED
11. Date company informed
13 FEBRUARY 2004
12. Total holding following this notification
57,366,187
13. Total percentage holding of issued class following this notification
6.05%
14. Any additional information
NOTIFICATION RECEIVED PURSUANT TO S198-202 COMPANIES ACT 1985 THAT THE
SHAREHOLDER NAMED IN 2 ABOVE HAS INCREASED THEIR SHAREHOLDING IN SPIRENT PLC
TO 6.05%. SHAREHOLDER PREVIOUSLY REPORTED A SHAREHOLDING OF 47,457,381 SHARES
(5.01%) ON 2 FEBRUARY 2004.
15. Name of contact and telephone number for queries
LUKE THOMAS - 01293 767658
16. Name and signature of authorised company official responsible for making
this notification
LUKE THOMAS - DEPUTY COMPANY SECRETARY
Date of notification
13 FEBRUARY 2004
The FSA does not give any express or implied warranty as to the accuracy of this
document or material and does not accept any liability for error or omission.
The FSA is not liable for any damages (including, without limitation, damages
for loss of business or loss of profits) arising in contract, tort or otherwise
from the use of or inability to use this document, or any material contained in
it, or from any action or decision taken as a result of using this document or
any such material.
Signatures
Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.
______LUKE THOMAS______
(Registrant)
Date 13 February, 2004 By ____/s/ Luke Thomas____
(Signature)*