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, 2003
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 Desig No of Shares
ALMLUFTTL-18409-CHASE MANHATTA ALMLUFTT 475,880
ASTEXMTTL-21359-CHASE NOMINEES ASTEXMTT 953,690
ASUKEXTTL-20947-CHASE MANHATTA ASUKEXTT 18,534,178
BARCLAYS CAPITAL NOMINEES LIMI 738,302
BARCLAYS TRUST CO AS EXEC/ADM BLENTFUK 713
BLENTFUKQ-16344-CHASE MANHATTA BLENTPUK 113,162
BLENTPUKQ-16345-CHASE MANHATTA BLEOFDUK 276,391
BLEQFDUKQ-16331-CHASE MANHATTA BLEOPTUE 246,435
BLEQPTUEA-16341-CHASE MANHATTA BLEOPTUK 1,146,511
BLEQPTUKQ-16341-CHASE MANHATTA BLUKINTT 585,669
BLUKINTTL-16400-CHASE MANHATTA 527191 8,344,640
CHASE MANHATTAN BANK 536747 3,216,781
CHASE MANHATTAN BANK 552942 678,395
CHASE MANHATTAN BANK CHATRKTT 602,072
CHATRKTTL-16376-CHASE MANHATTA 573039 475,611
INVESTORS BANK AND TRUST CO. 585934 81,648
INVESTORS BANK AND TRUST CO. 595966 5,892
INVESTORS BANK AND TRUST CO. 601389 372,351
INVESTORS BANK AND TRUST CO. 540186 16,891
JPMORGAN CHASE BANK 581610 219,070
NORTHERN TRUST BANK - BGI SEPA 584069 329,081
NORTHERN TRUST BANK - BGI SEPA 583996 141,650
UBS LIMITED 446,293
ZEBAN NOMINEES LIMITED 4,780
TOTAL 38,006,086
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
16 October 2003
11. Date company informed
21 October 2003
12. Total holding following this notification
38,006,086
13. Total percentage holding of issued class following this notification
4.03%
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
4.03%. Shareholder previously reported a shareholding of 28,604,635 shares
(3.03%) on 21 August 2003.
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
21 October 2003
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 21 October 2003 By ____/s/ Luke Thomas____
(Signature)*