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
BARCLAYS CAPITAL NOMINEES LIMI - 754,502
CHASE NOMINEES LTD 16376 531,812
CHASE NOMINEES LTD 20947 32,662,417
CHASE NOMINEES LTD 21359 1,220,660
CIBC MELLON GLOBAL SECURITIES 34,666
INVESTORS BANK AND TRUST CO 552,782
INVESTORS BANK AND TRUST CO 2,200,489
INVESTORS BANK AND TRUST CO 316,873
INVESTORS BANK AND TRUST CO 10,802
INVESTORS BANK AND TRUST CO 314,881
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 9,220,753
JP MORGAN (BGI CUSTODY) 18409 526,737
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 68,109
MELLON TRUST - BOSTON & SF 136,755
MELLON TRUST OF NEW ENGLAND 141,218
NORTHERN TRUST BANK - BGI SEPA 179,339
NORTHERN TRUST BANK - BGI SEPA 123,980
NORTHERN TRUST BANK - BGI SEPA 29,889
R C GREIG NOMINEES LIMITED A/C BL1 138,823
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
ZEBAN NOMINEES LIMITED 1,000
TOTAL 54,428,018
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 30 SEPTEMBER 2004
11. Date company informed
07 OCTOBER 2004
12. Total holding following this notification
54,428,018
13. Total percentage holding of issued class following this notification
5.70%
14. Any additional information
NOTIFICATION RECEIVED PURSUANT TO S198-202 COMPANIES ACT 1985 THAT THE
SHAREHOLDER NAMED IN 2 ABOVE HAS DECREASED THEIR NOTIFIABLE SHAREHOLDING IN
SPIRENT PLC TO 5.71%. SHAREHOLDER PREVIOUSLY REPORTED A SHAREHOLDING OF
97,332,138 SHARES (10.20%) ON 01 OCTOBER 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
07 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 07 October 2004 By ____/s/ Luke Thomas____
(Signature)*