Director Shareholding

Spirent PLC
25 February 2005

                                  SCHEDULE 11

          NOTIFICATION OF INTERESTS OF DIRECTORS AND CONNECTED PERSONS



1. Name of company


SPIRENT PLC



2. Name of director


ANDERS GUSTAFSSON



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 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)


N/A



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


ACQUISITION OF ORDINARY SHARES



7. Number of shares / amount of stock acquired


50,000





8. Percentage of issued class


0.005%



9. Number of shares/amount of stock disposed


N/A


10. Percentage of issued class


N/A



11. Class of security


ORDINARY SHARES OF 3 1/3 PENCE



12. Price per share


65.5 PENCE


13. Date of transaction


25 FEBRUARY 2005



14. Date company informed


25 FEBRUARY 2005



15. Total holding following this notification


230,180 (see additional information in box 23)



16. Total percentage holding of issued class following this notification


0.024%



If a director has been granted options by the company please complete the
following boxes.



17. Date of grant


N/A



18. Period during which or date on which exercisable


N/A



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


N/A



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


N/A



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


N/A



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


N/A



23. Any additional information


180,180 OF THE ORDINARY SHARES STATED IN BOX 15 ABOVE ARE HELD NON-BENEFICIALLY 
BY THE EMPLOYEE SHARE OWNERSHIP TRUST AS A CONDITIONAL SHARE AWARD. BENEFICIAL 
INTEREST IN THE SHARES WILL NOT BE GRANTED UNTIL 2 AUGUST 2007 SUBJECT TO HIM
STILL BEING IN THE COMPANY'S EMPLOYMENT.


24. Name of contact and telephone number for queries


MICHAEL ANSCOMBE

TEL: [phone]



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


MICHAEL ANSCOMBE



Date of Notification


25 FEBRUARY 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.



                                  SCHEDULE 11

          NOTIFICATION OF INTERESTS OF DIRECTORS AND CONNECTED PERSONS



1. Name of company


SPIRENT PLC



2. Name of director


ERIC HUTCHINSON



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 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)


N/A



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


ACQUISITION OF ORDINARY SHARES



7. Number of shares / amount of stock acquired


15,000



326 (see additional information in box 23)



8. Percentage of issued class


0.0016%



9. Number of shares/amount of stock disposed


N/A


10. Percentage of issued class


N/A



11. Class of security


ORDINARY SHARES OF 3 1/3 PENCE



12. Price per share


65.5 PENCE



19.36 PENCE (see additional information in box 23)



13. Date of transaction


25 FEBRUARY 2005



14. Date company informed


25 FEBRUARY 2005



15. Total holding following this notification


753,707



16. Total percentage holding of issued class following this notification


0.078%



If a director has been granted options by the company please complete the
following boxes.



17. Date of grant


N/A



18. Period during which or date on which exercisable


N/A



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


N/A



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


N/A



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


N/A



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


N/A



23. Any additional information


A PORTION OF THE DIRECTOR'S SHARES ARE HELD IN AN INDIVIDUAL SAVINGS ACCOUNT 
(ISA) PLAN. MR HUTCHINSON WAS INFORMED BY HIS ISA PLAN PROVIDER THAT 326 SHARES 
HAD BEEN PURCHASED ON 4 NOVEMBER 2002 UNDER HIS DIVIDEND REINVESTMENT
ARRANGEMENT. THE PRICE SHOWN IN BOX 12 ABOVE IS THE MARKET VALUE OF A SPIRENT 
ORDINARY SHARE AS AT 4 NOVEMBER 2002.



24. Name of contact and telephone number for queries


MICHAEL ANSCOMBE

TEL: [phone]



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


MICHAEL ANSCOMBE



Date of Notification


25 FEBRUARY 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.





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