Directors' Notification of Dealing in Shares

Spirent PLC
25 May 2000

                       DEALINGS BY DIRECTORS


1)  NAME OF COMPANY

    SPIRENT PLC (FORMERLY BOWTHORPE PLC)

2)  NAME OF DIRECTOR

    ERIC GEORGE HUTCHINSON

3)  Please state whether notification indicates that it is in respect of
    holding of the Director named in 2 above or holding of that person's
    spouse or children under the age of 18 or in respect of a non-beneficial
    interest

    HOLDING BY EMPLOYEE BENEFIT TRUST OF WHICH DIRECTORS ARE BENEFICIARIES

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

    ORBIS PENSION TRUSTEES LIMITED T1019

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

    THE DIRECTOR, TOGETHER WITH ALL OTHER EMPLOYEES IS A POTENTIAL BENEFICIARY
    OF AN EMPLOYEE BENEFIT TRUST ESTABLISHED IN RESPECT OF THE LTSPP TO 
    PROVIDE SPIRENT ORDINARY SHARES UNDER A LONG TERM SHARE PURCHASE PLAN

7)  Number of shares/amount of
    stock acquired

    462,500

8)   ( 0.0741 % )
    of issued Class

9)  Number of shares/amount
    of stock disposed

    -

10)  (  -  % )
   of issued Class

11) Class of security

    ORDINARY SHARES OF 3 1/3P EACH

12) Price per share

    336.0169P

13) Date of transaction

    24 MAY 2000

14) Date company informed

    24 MAY 2000

15) Total holding following this notification

        29,301 PERSONAL
     5,059,779 HOLDING IN QUEST (SEE BOX 23)
     8,004,320 HOLDING IN LTSPP (SEE BOX 6)
    13,093,400

16) Total percentage holding of issued class following this notification

    2.0988%

     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

    THE DIRECTOR IN 2 ABOVE, TOGETHER WITH ALL OTHER EMPLOYEES, IS A
    POTENTIAL BENEFICIARY OF THE EMPLOYEE BENEFIT TRUST TO THE EXTENT
    OF HIS INDIVIDUAL SAYE SHARE OPTION HOLDING.  THIS IS NOT A DEALING BY
    A DIRECTOR.

24) Name of contact and telephone number for queries

    JO E GOMM  01293 528888

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

    LUKE THOMAS

    Date of Notification....  25 MAY 2000




                       DEALINGS BY DIRECTORS


1)  NAME OF COMPANY

    SPIRENT PLC (FORMERLY BOWTHORPE PLC)

2)  NAME OF DIRECTOR

    NICHOLAS KELVIN BROOKES

3)  Please state whether notification indicates that it is in respect of
    holding of the Director named in 2 above or holding of that person's
    spouse or children under the age of 18 or in respect of a non-beneficial
    interest

    HOLDING BY EMPLOYEE BENEFIT TRUST OF WHICH DIRECTORS ARE BENEFICIARIES

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

    ORBIS PENSION TRUSTEES LIMITED T1019

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

    THE DIRECTOR, TOGETHER WITH ALL OTHER EMPLOYEES IS A POTENTIAL BENEFICIARY
    OF AN EMPLOYEE BENEFIT TRUST ESTABLISHED IN RESPECT OF THE LTSPP TO 
    PROVIDE SPIRENT ORDINARY SHARES UNDER A LONG TERM SHARE PURCHASE PLAN

7)  Number of shares/amount of
    stock acquired

    462,500

8)   ( 0.0741 % )
    of issued Class

9)  Number of shares/amount
    of stock disposed

    -

10)  (  -  % )
   of issued Class

11) Class of security

    ORDINARY SHARES OF 3 1/3P EACH

12) Price per share

    336.0169P

13) Date of transaction

    24 MAY 2000

14) Date company informed

    24 MAY 2000

15) Total holding following this notification

        86,553 PERSONAL
     5,059,779 HOLDING IN QUEST (SEE BOX 23)
     8,004,320 HOLDING IN LTSPP (SEE BOX 6)
    13,150,652

16) Total percentage holding of issued class following this notification

    2.1080%

     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

    THE DIRECTOR IN 2 ABOVE, TOGETHER WITH ALL OTHER EMPLOYEES, IS A
    POTENTIAL BENEFICIARY OF THE EMPLOYEE BENEFIT TRUST TO THE EXTENT
    OF HIS INDIVIDUAL SAYE SHARE OPTION HOLDING.  THIS IS NOT A DEALING BY
    A DIRECTOR.

24) Name of contact and telephone number for queries

    JO E GOMM  01293 528888

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

    LUKE THOMAS

    Date of Notification.... 25 MAY 2000