SOURCE: Spirent PLC

June 20, 2005 10:07 ET

Spirent PLC announces Holding(s) in Company -2

Crawley, UK -- (MARKET WIRE) -- June 20, 2005 --

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


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

    CDC FINANCE (FIGEST)                                           21,500
    JP MORGAN, BOURNEMOUTH (FII)                                  610,700
    BROWN BROTHERS HARRIMAN AND CO (FIJ)                            7,200
    BANK OF NEW YORK BRUSSELS (FIL)                               439,500
    BNP PARIBAS, PARIS (C) (FIL)                                   19,600
    BROWN BROTHERS HARRIMN LTD LUX (FIL)                       13,437,494
    NORTHERN TRUST LONDON (FIL)                                    69,200
    JP MORGAN BOURNEMOUTH (FISL)                               11,251,776
    BANK OF NEW YORK BRUSSELS (FPM)                             1,772,800
    BANKERS TRUST LONDON (FPM)                                    722,000
    CLYDESDALE BANK PLC (FPM)                                     160,300
    HSBC BANK PLC (FPM)                                           156,000
    JP MORGAN BOURNEMOUTH (FPM)                                 2,865,617
    MELLON BANK (FPM)                                           1,421,400
    MIDLAND SECURITIES SERVICES (FPM)                             396,300
    NORTHERN TRUST LONDON (FPM)                                 2,632,300
    STATE STR BK AND TR CO LNDN (FPM)                           1,317,000
    BROWN BROTHERS HARRIMAN AND CO (IN FORM OF 11,000              44,000
    ADRS) (FMRCO)     
     
    TOTAL                                                      37,344,687

    FIGEST = Fidelity Gestion
    FII = Fidelity Investments International
    FIJ = Fidelity Investments Japan     
    FIL = Fidelity International Limited
    FISL = Fidelity Investment Services Limited
    FPM = Fidelity Pension Management
    FMRCO = Fidelity Management & Research Company


5.  Number of shares / amount of stock acquired

    NOT KNOWN


6.  Percentage of issued class

    NOT KNOWN


7.  Number of shares / amount of stock disposed

    N/A


8.  Percentage of issued class

    N/A


9.  Class of security

    ORDINARY SHARES OF 3.3333 PENCE EACH


10. Date of transaction

    NOT KNOWN


11. Date company informed

    20 MAY 2005


12. Total holding following this notification

    37,344,687


13. Total percentage holding of issued class following this notification

    3.88%


14. Any additional information

    SHAREHOLDER PREVIOUSLY REPORTED A SHAREHOLDING OF 28,694,687 SHARES 
    (2.98%) EARLIER TODAY.


15. Name of contact and telephone number for queries

    MICHAEL ANSCOMBE - 01293 767672


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

    MICHAEL ANSCOMBE - ASSISTANT COMPANY SECRETARY

Date of notification

20 JUNE 2005

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.

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