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 October 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 designation Holding
BANK OF NEW YORK 214075 3,861,569
BANK OF NEW YORK 221428 524,342
BANK OF NEW YORK 367748 2,596,205
BANK OF NEW YORK 392067 3,952,562
BANK OF NEW YORK 392177 313,638
BARCLAYS CAPITAL NOMINEES LIMI 754,502
BNY (OCS) NOMINEES LTD 221476 252,149
BNY (OCS) NOMINEES LTD 387173 123,795
BOISS NOMINEES LTD 4224361 394,969
CHASE NOMINEES LTD 16376 531,812
CHASE NOMINEES LTD 16649 41,844
CHASE NOMINEES LTD 16669 63,310
CHASE NOMINEES LTD 18243 123,823
CHASE NOMINEES LTD 19518 253,833
CHASE NOMINEES LTD 19519 2,464,292
CHASE NOMINEES LTD 19520 638,744
CHASE NOMINEES LTD 20947 36,769,332
CHASE NOMINEES LTD 21359 1,220,660
CHASE NOMINEES LTD 25772 520,077
CHASE NOMINEES LTD 27793 74,767
CHASE NOMINEES LTD 27795 114,340
CHASE NOMINEES LTD 27797 138,568
CHASE NOMINEES LTD 27799 299,495
CHASE NOMINEES LTD 27800 1,145,581
CHASE NOMINEES LTD 27802 40,008
CHASE NOMINEES LTD 28269 106,605
CHASE NOMINEES LTD 28270 590,971
CHASE NOMINEES LTD 28270 266,132
CHASE NOMINEES LTD 31961 1,347,971
CIBC MELLON GLOBAL SECURITIES 34,666
CITIBANK 6010613363 333,841
CITIBANK 6010640794 252,237
CITIBANK 6010782807 275,601
DEUTSCHE (BANKERS TRUST) 501575013 378,406
DEUTSCHE BANK LONDON 8003168 30,331
HSBC 813168 808,840
HSBC 814537 80,198
HSBC 845315 23,453
INVESTORS BANK AND TRUST CO 314,881
INVESTORS BANK AND TRUST CO 841,643
INVESTORS BANK AND TRUST CO 2,914,583
INVESTORS BANK AND TRUST CO 10,802
INVESTORS BANK AND TRUST CO 349,682
INVESTORS BANK AND TRUST CO 111,024
JP MORGAN (BGI CUSTODY) 16331 268,799
JP MORGAN (BGI CUSTODY) 16341 667,949
JP MORGAN (BGI CUSTODY) 16341 1,754,917
JP MORGAN (BGI CUSTODY) 16344 400,264
JP MORGAN (BGI CUSTODY) 16345 742,167
JP MORGAN (BGI CUSTODY) 16400 8,915,859
JP MORGAN (BGI CUSTODY) 16612 154,621
JP MORGAN (BGI CUSTODY) 16621 186,353
JP MORGAN (BGI CUSTODY) 16644 420,978
JP MORGAN (BGI CUSTODY) 16901 127,521
JP MORGAN (BGI CUSTODY) 18409 526,737
JP MORGAN (BGI CUSTODY) 19514 128,618
JP MORGAN (BGI CUSTODY) 27795 258,537
JP MORGAN (BGI CUSTODY) 27799 785,257
JP MORGAN (BGI CUSTODY) 28166 3,027,976
JP MORGAN (BGI CUSTODY) 29514 117,527
JPM FRANKFURT 27717 67,625
JP MORGAN CHASE BANK 360,275
JP MORGAN CHASE BANK 381,288
JP MORGAN CHASE BANK 479,984
JP MORGAN CHASE BANK 6,566
JP MORGAN CHASE BANK 188,365
MELLON BANK ABGFZ872482 745,728
MELLON BANK TGGF0003002 91,742
MELLON TRUST - BOSTON & SF 128,392
MELLON TRUST OF NEW ENGLAND 193,162
MIDLAND BANK (HSBC BANK PLC) 772823 1,951,762
NORTHERN TRUST CVS21 987,313
NORTHERN TRUST LIV02 746,036
NORTHERN TRUST SCO06 303,975
NORTHERN TRUST TNF01 384,795
NORTHERN TRUST USF06 193,023
NORTHERN TRUST USF12 1,760,355
NORTHERN TRUST BANK - BGI SEPA 168,498
NORTHERN TRUST BANK - BGI SEPA 41,732
NORTHERN TRUST BANK - BGI SEPA 256,471
R C GREIG NOMINEES LIMITED A/C BL1 140,823
R C GREIG NOMINEES LIMITED A/C CM1 32,079
R C GREIG NOMINEES LIMITED GP1 GP1 34,067
R C GREIG NOMINEES LIMITED SA1 SA1 22,152
STATE STREET 2RJ2 127,458
STATE STREET JD12 447,165
STATE STREET N3B2 8,621
STATE STREET N3B6 273,550
STATE STREET N3YZ 10,446
STATE STREET VE4J 205,686
VIDACOS NOMINEES LIMITED 6010830763 1,800,140
ZEBAN NOMINEES LIMITED 21,700
ZEBAN NOMINEES LIMITED 1,000
TOTAL 97,332,138
5. Number of shares / amount of stock acquired
-
6. Percentage of issued class
-
7. Number of shares / amount of stock disposed
NOT NOTIFIED
8. Percentage of issued class
NOT NOTIFIED
9. Class of security
ORDINARY SHARES OF 3.3333 PENCE EACH
10. Date of transaction
HOLDING AS AT 28 SEPTEMBER 2004
11. Date company informed
01 OCTOBER 2004
12. Total holding following this notification
97,332,138
13. Total percentage holding of issued class following this notification
10.20%
14. Any additional information
NOTIFICATION RECEIVED PURSUANT TO S198-202 COMPANIES ACT 1985 THAT THE
SHAREHOLDER NAMED IN 2 ABOVE HAS DECREASED THEIR SHAREHOLDING IN SPIRENT PLC
TO 10.20%. SHAREHOLDER PREVIOUSLY REPORTED A SHAREHOLDING OF 105,945,146
SHARES (11.17%) ON 12 MARCH 2004.
15. Name of contact and telephone number for queries
MICHAEL ANSCOMBE - 01293 767672
16. Name and signature of authorised company official responsible for making
this notification
MICHAEL ANSCOMBE - ASSISTANT COMPANY SECRETARY
Date of notification
01 OCTOBER 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 01 October 2004 By ____/s/ Luke Thomas____
(Signature)*