Director Shhlding Replacement

Spirent PLC
25 May 2000



The issuer has made the following amendments to the Directors Shareholding
announcement released 23rd May 2000 at 7:54 under RNS No 0624L.

The announcement contains several changes that have been identified with an
asterisk (*).

All other details remain unchanged.

The full corrected version is shown below.
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                       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

   * 1,020,000

8) *  (0.1635% )
    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

    * 354.491P

13) Date of transaction

   * 23 MAY 2000

14) Date company informed

   * 23 MAY 2000

15) Total holding following this notification

       29,301 PERSONAL
    5,059,779 HOLDING IN QUEST (SEE BOX 23)
  * 7,541,820 HOLDING IN LTSPP (SEE BOX 6)
  *12,630,900

16) Total percentage holding of issued class following this notification

   *   2.0247%

     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

    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

  *  1,020,000

8) *  (0.1635% )
    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

    * 354.491P

13) Date of transaction

  *  23 MAY 2000

14) Date company informed

  * 23 MAY 2000

15) Total holding following this notification

       86,553 PERSONAL
    5,059,779 HOLDING IN QUEST (SEE BOX 23)
 *  7,541,820 HOLDING IN LTSPP (SEE BOX 6)
 * 12,688,152

16) Total percentage holding of issued class following this notification

  *    2.0339%

     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

    Date of Notification.25 MAY 2000.