Director Shareholding

Spirent PLC
15 December 2000

                       DEALINGS BY DIRECTORS


1)  NAME OF COMPANY

    SPIRENT PLC

2)  NAME OF DIRECTOR

    NICHOLAS K BROOKES


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 or in respect of an non-beneficial interest

    IN RESPECT OF THE DIRECTOR'S HOLDING

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

    NOT NOTIFIED


5)  Please state whether notification relates to a person(s) connected
    with the Director named in 2 above and identify the connected person(s)

    N/A


6)  Please state the nature of the transaction. For PEP transactions
    please indicate whether general/single co PEP and if discretionary/non
    discretionary

    EXERCISE OF OPTIONS UNDER THE COMPANY'S EXECUTIVE SHARE OPTION SCHEME


7)  Number of shares/amount of
    stock acquired

    227,495


8)   (0.0278%)
    of issued Class


9)  Number of shares/amount
    of stock disposed

    227,495


10)  (0.0278%)
    of issued Class


11) Class of security

    ORDINARY SHARES OF 3 1/3P EACH


12) Price per share

    OPTION PRICE     133.08 PENCE
    SALE PRICE       641.396 PENCE

13) Date of transaction

    15 DECEMBER 2000


14) Date company informed

    15 DECEMBER 2000

15) Total holding following this notification

    104,584


16) Total percentage holding of issued class following this notification

    0.0128%

     IF A DIRECTOR HAS BEEN GRANTED OPTIONS BY THE COMPANY PLEASE
                    COMPLETE THE FOLLOWING BOXES

17) Date of grant



18) Period during which or date on which exercisable



19) Total amount paid (if any) for grant of the option



20) Description of shares or debentures involved: class, number.



21) Exercise price (if fixed at time of grant) or indication that price
    is to be fixed at time of exercise



22) Total number of shares or debentures over which options held
    following this notification



23) Any additional information



24) Name of contact and telephone number for queries

    J E GOMM - 01293 767656

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

   Date of Notification    15 DECEMBER 2000