Director Shareholding

Spirent PLC
28 February 2005

                                  SCHEDULE 11

          NOTIFICATION OF INTERESTS OF DIRECTORS AND CONNECTED PERSONS



1. Name of company

Spirent plc

2. Name of director

Mr Goran Ennerfelt

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

Beneficial interest via Lexa BV - see paragraph 23

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

Lexa BV

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

Lexa BV

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 shares

7. Number of shares / amount of stock acquired

1,000,000

8. Percentage of issued class

0.10%

9. Number of shares/amount of stock disposed

-

10. Percentage of issued class

-

11. Class of security

Ordinary shares of 3.3333 pence each

12. Price per share

68.97 pence

13. Date of transaction

28 February 2005

14. Date company informed

28 February 2005

15. Total holding following this notification

120,000,000

16. Total percentage holding of issued class following this notification

12.48%

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

Goran Ennerfelt has a connected notifiable interest in the Spirent Ordinary 
shares held by Lexa BV which, for statutory purposes, is also deemed to be an 
interest of the director.

24. Name of contact and telephone number for queries

Luke Thomas - 01293 767658

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

Luke Thomas - Deputy Company Secretary

Date of Notification

28 February 2005

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