Holding(s) in Company

Senior PLC
12 February 2008


TR-1 (i): NOTIFICATION OF MAJOR INTERESTS IN SHARES
--------------------------------------------------


1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached (ii):

Senior plc

2. Reason for the notification:

An acquisition or disposal of Voting Rights

3. Full name of person(s) subject to the notification obligation (iii):

JP Morgan Chase & Co.

4. Full name of shareholder(s) (if different from 3.) (iv):

JP Morgan Investment Management Inc.
JF Asset Management Limited
JP Morgan Asset Management (Japan) Limited
JP Morgan Asset Management (UK) Limited

5. Date of the transaction (and date on which the threshold is crossed or
reached if different) (v):

8 February 2008

6. Date on which issuer notified:

12 February 2008

7. Threshold(s) that is/are crossed or reached:

5%

8. Notified details:

A: Voting rights attached to shares

 Class/type   Situation previous to the       Resulting situation after the triggering
 of shares   Triggering transaction (vi)                 transaction (viii)
               Number of     Number of     Number of     Number of Voting     % of Voting
                Shares     Voting Rights    Shares            Rights            Rights
                              (viii)                   Direct Indirect (xi) Direct Indirect
                                                        (x)
GB0007958233  19,525,591    19,525,591    15,713,546           15,713,546            4.02


B: Financial Instruments

Resulting situation after the triggering transaction (xii)
Type of     Expiration Exercise /      Number of voting rights that may  % of
financial   Date       Conversion      be acquired if the instrument is  voting
instrument  (xiii)     Period / Date   exercised / converted.            rights
                       (xiv)

TOTAL (A+B)

          Number of voting rights                    % of voting rights
                 15,713,546                                4.02


9. Chain of controlled undertakings through which the voting rights and/or the
   financial instruments are effectively held, if applicable (xv):


Total Disclosable Holding for JP Morgan Chase & Co. : 15,713,546 (4.02%)

JP Morgan Investment Management Inc.
JF Asset Management Limited
JP Morgan Asset Management (Japan) Limited
JP Morgan Asset Management (UK) Limited


Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

13. Additional information:

14. Contact name:

A Bodenham, Company Secretary, Senior plc

15. Contact telephone number:

01923 714745

Annex to Notification Of Major Interests In Shares (xvi)

A: Identity of the person or legal entity subject to the notification obligation

Full name (including legal form for legal entities):

Senior plc

Contact address (registered office for legal entities):

59/61 High Street, Rickmansworth, WD3 1RH.

Phone number:

01923 714745

Other useful information (at least legal representative for legal persons):

B: Identity of the notifier, if applicable (xvii)

Full name:

A Bodenham

Contact address:

59/61 High Street, Rickmansworth, WD3 1RH.

Phone number:

01923 714745

Other useful information (e.g. functional relationship with the person or legal
entity subject to the notification obligation):

C: Additional information :



                      This information is provided by RNS
            The company news service from the London Stock Exchange
       LUUSVRWURUAAR