Holding(s) in Company

Spirent PLC
24 October 2002

          London Stock Exchange

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES



All relevant boxes should be completed in block capital letters

1    Name of company                                             2    Name of shareholder having a major interest



                                                                      AVIVA plc

     SPIRENT plc


3    Please state whether notification indicates that it is in   4    Name of the registered holder(s) and, if more
                                                                      than one holder, the number of shares held by
     respect of holding of the shareholder named in 2 above or        each of them

     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 IN 2 ABOVE


5    Number of shares 6   Percentage of     7   Number of shares 8    Percentage of Issued
     / amount of          Issued                /amount of stock
     stock acquired                             disposed              Class
                          Class
                                                2,318,096             0.25%
                          -
     -


9     Class of security                                     10    Date of transaction    11   Date company informed

      ORDINARY SHARES OF 3 1/3p EACH                              21 October 2002             24 October 2002

12    Total holding following this notification             13    Total percentage holding of issued class following
                                                                  this notification
      45,577,574
                                                                  4.85%




14   Any additional information                            15   Name of contact and telephone number for queries



     NOTIFICATION IN ACCORDANCE WITH S. 198-202 COMPANIES
     ACT 1985
                                                                M ANSCOMBE - 01293 767672


16   Name and signature of authorised company official

     responsible for making this notification







     Date of notification 24 October 2002                       Michael Anscombe - Assistant Company Secretary


London Stock Exchange, Company Announcements Office, Old Broad Street, London
EC2N 1HP

Facsimile: 0207 588 6057, 0207 334 8964/8965/8966 (PLEASE DO NOT POST)

Enquries: Continuing Obligations: Telephone: [phone]


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