Holding(s) in Company

Senior PLC
19 May 2006


                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


1. Name of company


Senior plc.


2. Name of shareholder having a major interest


Aviva plc and its subsidiaries.


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


As 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


Morley Fund Management Limited:

BNY Norwich Union Nominees Ltd - 1,758,652

Chase GA Group Nominees Limited - 5,965,849

Chase Nominees Limited - 717,373

CUIM Nominee Limited - 1,105,717


5. Number of shares / amount of stock acquired


N/a.


6. Percentage of issued class


N/a.


7. Number of shares / amount of stock disposed


397,623.


8. Percentage of issued class


0.12%.


9. Class of security


Ordinary 10p.


10. Date of transaction


17 May 2006.


11. Date company informed


19 May 2006.


12. Total holding following this notification


9,574,591*


* beneficial holding only.


13. Total percentage holding of issued class following this notification


2.95%


14. Any additional information





15. Name of contact and telephone number for queries


Andrew Bodenham, 01923 714745.


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


As above.


Date of notification


19 May 2006.


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