RNS Number:3320Q
Spirent PLC
30 September 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
-

6. Percentage of issued class
-

7. Number of shares / amount of stock disposed
1,125,000

8. Percentage of issued class
0.12%

9. Class of security
Ordinary shares of 3.3333 pence each

10. Date of transaction
29 September 2003





11. Date company informed
30 September 2003

12. Total holding following this notification
27,286,605

13. Total percentage holding of issued class following this notification
2.89%

14. Any additional information
Notification pursuant to S198-202 Companies Act 1985 that the shareholder no longer 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
30 September 2003

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