Holding(s) in Company

Spirent PLC
04 August 2003

                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Name of company

Spirent plc

2. Name of shareholder having a major interest

Stanlife Nominees Limited

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

Shareholder in 2 above

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

Shareholder in 2 above

5. Number of shares / amount of stock acquired

3,000,000

6. Percentage of issued class

0.32%

7. Number of shares / amount of stock disposed

-

8. Percentage of issued class

-

9. Class of security

Ordinary shares of 3.3333 pence each

10. Date of transaction

1 August 2003

11. Date company informed

04 August 2003

12. Total holding following this notification

30,875,920

13. Total percentage holding of issued class following this notification

3.27%

14. Any additional information

Notification pursuant to S198-202 Companies Act 1985 that the shareholder has a 
notifiable interest

15. Name of contact and telephone number for queries

Luke Thomas - 01293 767658

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

Luke Thomas - Deputy Company Secretary

Date of notification

04 August 2003


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