Holding(s) in Company

Spirent PLC
31 October 2002


                  DEALINGS BY SUBSTANTIAL SHAREHOLDERS


1)   NAME OF COMPANY

     SPIRENT PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

     FIDELITY INTERNATIONAL LIMITED

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

     COMPANY NAMED IN BOX 2 ABOVE AND ITS DIRECT AND INDIRECT SUBSIDIARIES, 
     BEING NON-BENEFICIAL HOLDERS

4)   Name of the registered holder(s) and, if more than one holder, the 
     number of shares held by each of them.

     CHASE MANHATTAN BANK LONDON (FISL):                12,462,979
     HSBC (FPM):                                           452,800
     CHASE NOMINEES LIMITED (FPM):                       4,561,300
     NORTHERN TRUST (FPM):                               1,459,100
     CHASE MANHATTAN BANK LONDON (FIL):                    953,497 
     BANK OF NEW YORK BRUSSELS (FIL):                      582,900
     NORTHERN TRUST (FIL):                               1,914,200
     CHASE NOMINEES LIMITED (FIL):                       7,236,840
     BANK OF NEW YORK LONDON (FIL):                      3,067,800
     NORTRUST NOMINEES LIMITED (FIL):                    2,259,800

     TOTAL:                                             34,951,216  
     
5)   Number of shares/amount of stock acquired.

     34,951,216

6)   ( 3.72%) of issued Class

7)   Number of shares/amount of stock disposed

     N/A

8)   ( N/A %) of issued Class

9)   Class of security

     ORDINARY SHARES OF 3 1/3p EACH

10)  Date of transaction

     NOT NOTIFIED

11)  Date company informed

     30 OCTOBER 2002

12)  Total holding following this notification

     34,951,216
               
13)  Total percentage holding of issued class following this notification

     3.72%     

14)  Any additional information



15)  Name of contact and telephone number for queries

     LUKE THOMAS - 01293 767 676

16)  Name and signature of authorised company official responsible for 
     making this notification

     Date of Notification ....31 OCTOBER 2002

                      This information is provided by RNS
            The company news service from the London Stock Exchange