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 November 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 804,872
CHASE NOMINEES LTD 16376 562,967
CHASE NOMINEES LTD 20947 29,821,307
CHASE NOMINEES LTD 21359 1,267,026
INVESTORS BANK AND TRUST CO 116,208
INVESTORS BANK AND TRUST CO 298,290
INVESTORS BANK AND TRUST CO 369,757
INVESTORS BANK AND TRUST CO 12,766
JP MORGAN (BGI CUSTODY) 16331 351,468
JP MORGAN (BGI CUSTODY) 16341 1,453,016
JP MORGAN (BGI CUSTODY) 16341 550,836
JP MORGAN (BGI CUSTODY) 16344 473,746
JP MORGAN (BGI CUSTODY) 16345 820,410
JP MORGAN (BGI CUSTODY) 16400 9,999,746
JP MORGAN (BGI CUSTODY) 18409 484,895
JP MORGAN CHASE BANK 633,980
JP MORGAN CHASE BANK 360,275
JP MORGAN CHASE BANK 409,555
JP MORGAN CHASE BANK 179,290
R C GREIG NOMINEES LIMITED A/C BL1 134,745
R C GREIG NOMINEES LIMITED A/C CM1 35,079
R C GREIG NOMINEES LIMITED GP1 GP1 34,067
R C GREIG NOMINEES LIMITED SA1 SA1 22,152
ZEBAN NOMINEES LIMITED 1,000
TOTAL 49,197,453
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
HOLDING AS AT 23 NOVEMBER 2004
11. Date company informed
25 NOVEMBER 2004
12. Total holding following this notification
49,197,453
13. Total percentage holding of issued class following this notification
5.15%
14. Any additional information
NOTIFICATION RECEIVED PURSUANT TO S198-202 COMPANIES ACT 1985 THAT THE
SHAREHOLDER NAMED IN 2 ABOVE HAS INCREASED THEIR NOTIFIABLE SHAREHOLDING IN
SPIRENT PLC TO 5.15%. SHAREHOLDER PREVIOUSLY REPORTED A SHAREHOLDING OF
47,205,061 SHARES (4.94%) ON 01 NOVEMBER 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
25 NOVEMBER 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 25 November 2004 By ____/s/ Luke Thomas____
(Signature)*