Directors' Notification of Dealing in Shares

Spirent PLC
16 May 2000

SPIRENT plc - STOCK EXCHANGE TICKER SYMBOL SPT 
NOTIFICATION OF INTERESTS IN DIRECTORS AND CONNECTED PERSONS- 
NICHOLAS KELVIN BROOKES

Spirent plc (the 'Company') announces that 26,667 Performance Units at 1069
pence per Unit were granted on 11 May 2000 to Nicholas Kelvin Brookes (the
'Participant') under the terms of the Company's Long Term Share Purchase Plan
('LTSPP') (the 'Grant').  A Performance Unit is equivalent to one Ordinary share
of the Company.

The Participant is not required to pay any consideration in respect of the Grant
and his aggregate number of Performance Units held now stands at 285,632
following the 3 for 1 share split effective from 11pm on Friday 12 May 2000
under the LTSPP.

Subject to and in accordance with the rules and the operation of the LTSPP, the
first performance period in respect of the grant will be the three years
starting from 1 January 2000.  The second performance period in respect of the
Grant will be the three years starting from 1 January 2003.  Performance
conditions apply to both performance periods.

In respect of the first performance period, the value of the reward will be
based on the increase in value of the Performance Units between the date of
Grant and the third anniversary of the Grant.  In respect of the second
performance period, the value of the Grant cannot be determined since the
Participant has an entitlement to make an election to take any reward value in
the form of either Company shares and/or cash.




SPIRENT plc - STOCK EXCHANGE TICKER SYMBOL SPT 
NOTIFICATION OF INTERESTS IN DIRECTORS AND CONNECTED PERSONS- 
ERIC GEORGE HUTCHINSON

Spirent plc (the 'Company') announces that 9,000 Performance Units at 1069 pence
per Unit were granted on 11 May 2000 to Eric George Hutchinson (the
'Participant') under the terms of the Company's Long Term Share Purchase Plan
('LTSPP') (the 'Grant').  A Performance Unit is equivalent to one Ordinary share
of the Company.

The Participant is not required to pay any consideration in respect of the Grant
and has not been granted any previous awards under the LTSPP.  Following the 3
for 1 share split effective from 11 pm on Friday 12 May the total number of
units stands at 27,000 under the LTSPP.

Subject to and in accordance with the rules and the operation of the LTSPP, the
first performance period in respect of the grant will be the three years
starting from 1 January 2000.  The second performance period in respect of the
Grant will be the three years starting from 1 January 2003.  Performance
conditions apply to both performance periods.

In respect of the first performance period, the value of the reward will be
based on the increase in value of the Performance Units between the date of
Grant and the third anniversary of the Grant.  In respect of the second
performance period, the value of the Grant cannot be determined since the
Participant has an entitlement to make an election to take any reward value in
the form of either Company shares and/or cash.


                       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

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



7)  Number of shares/amount of
    stock acquired



8)   (    % )
    of issued Class

9)  Number of shares/amount
    of stock disposed



10)  (    % )
   of issued Class

11) Class of security



12) Price per share



13) Date of transaction



14) Date company informed



15) Total holding following this notification



16) Total percentage holding of issued class following this notification



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

17) Date of grant

11 MAY 2000

18) Period during which or date on which exercisable

11 MAY 2003 - 10 MAY 2010 

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

NIL

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

OPTIONS OVER 46,667 ORDINARY SHARES OF 10P EACH

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

1069P

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

644,241 POST SHARE SPLIT - SEE BOX 23 BELOW

23) Any additional information

3:1 SHARE SPLIT EFFECTED 11PM ON FRIDAY 12 MAY 2000

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  MICHAEL ARNAOUTI - GROUP COMPANY SECRETARY

    Date of Notification..16 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

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



7)  Number of shares/amount of
    stock acquired



8)   (    % )
    of issued Class

9)  Number of shares/amount
    of stock disposed



10)  (    % )
   of issued Class

11) Class of security



12) Price per share



13) Date of transaction



14) Date company informed



15) Total holding following this notification



16) Total percentage holding of issued class following this notification



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

17) Date of grant

11 MAY 2000

18) Period during which or date on which exercisable

11 MAY 2003 - 10 MAY 2010 

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

NIL

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

OPTIONS OVER 17,334 ORDINARY SHARES OF 10P EACH

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

1069P

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

260,337 POST SHARE SPLIT - SEE BOX 23 BELOW

23) Any additional information

3:1 SHARE SPLIT EFFECTED 11PM ON FRIDAY 12 MAY 2000

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  MICHAEL ARNAOUTI - GROUP COMPANY SECRETARY

    Date of Notification..16 MAY 2000................................