Spirent PLC Announces Holding(s) In Company


CRAWLEY, UK, Nov. 1, 2004 (PRIMEZONE) --



                            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                  27,953,872
 CHASE NOMINEES LTD                  21359                  1,176,143
 INVESTORS BANK AND TRUST CO         -                      434,795
 INVESTORS BANK AND TRUST CO         -                      11,784
 INVESTORS BANK AND TRUST CO         -                      298,290
 INVESTORS BANK AND TRUST CO         -                      111,024
 JP MORGAN (BGI CUSTODY)             16331                  244,863
 JP MORGAN (BGI CUSTODY)             16341                  1,654,211
 JP MORGAN (BGI CUSTODY)             16341                  635,690
 JP MORGAN (BGI CUSTODY)             16344                  400,264
 JP MORGAN (BGI CUSTODY)             16345                  742,167
 JP MORGAN (BGI CUSTODY)             16400                  9,962,821
 JP MORGAN (BGI CUSTODY)             18409                  484,895
 JP MORGAN CHASE BANK                -                      179,290
 JP MORGAN CHASE BANK                -                      409,555
 JP MORGAN CHASE BANK                -                      633,980
 JP MORGAN CHASE BANK                -                      360,275
 R C GREIG NOMINEES LIMITED A/C      BL1                    135,530
 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                  47,205,061

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 27 OCTOBER 2004

11. Date company informed

01 NOVEMBER 2004

12. Total holding following this notification

47,205,061

13. Total percentage holding of issued class following this notification

4.94%

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 4.94%. SHAREHOLDER PREVIOUSLY REPORTED A SHAREHOLDING OF 54,428,018 SHARES (5.70%) ON 07 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

01 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.


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