Holding(s) in Company

Senior PLC
15 May 2002


                  DEALINGS BY SUBSTANTIAL SHAREHOLDERS


1)   NAME OF COMPANY

     SENIOR PLC 

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

     SCHRODER INVESTMENT MANAGEMENT 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 NAMED 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. 

     SEE BELOW

5)   Number of shares/amount of stock acquired. 

     -

6)   ( - %) of issued Class 

7)   Number of shares/amount of stock disposed

     -

8)   ( - %) of issued Class 

9)   Class of security

     ORDINARY SHARE OF 10p EACH 

10)  Date of transaction

     -

11)  Date company informed

     15 MAY 2002

12)  Total holding following this notification

     59,407,982
                
13)  Total percentage holding of issued class following this notification 

     19.327%

14)  Any additional information 



15)  Name of contact and telephone number for queries 

     L. GRANT
     01923 714712 


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

     Date of Notification      15 MAY 2002 



LETTER TO SENIOR PLC

SENIOR PLC
10p ORDINARY SHARES ('SHARES')

We write to advise you that we, Schroder Investment Management Limited, have an  
interest in 54,907,982 shares which are held in portfolios managed by us on a  
discretionary basis for clients under investment management agreements. 

Included in this figure are:-

(i)   22,720,919 shares registered or to be registered in the name of our 
      wholly-owned subsidiary nominee company, Schroder Nominees Limited
      (Schroder Nominees),

(ii)  13,241,387 shares held in (a) unit trust(s) operated and managed by 
      an affiliated company, Schroder Unit Trusts Limited (SUTL). 10,548,287 
      shares are registered or to be registered in the name of Chase Nominees 
      Limited, while the remaining 2,693,100 shares are registered or to be
      registered in the name of MSS Nominees Limited a/c: 846435.

(iii) 18,945,676 shares neither registered nor to be registered in the name of
      Schroder Nominees Limited. The registration details are shown on 
      schedule A. 


An affiliated company, SIM North America Inc (SIMNA Inc), is managing (a) 
portfolio(s) on a discretionary basis holding a further 4,500,000 shares which 
are registered or to be registered in the name of Chase Nominees Limited.

We believe that we and our subsidiary and affiliated companies are therefore 
interested in an overall aggregate of 59,407,982 shares, representing some 
19.327% of the total number of shares in issue, namely 307,383,211 shares. 

This notification is made to you: 

(a) in respect of our interest as investment managers,

(b) on behalf of SIMNA Inc and SUTL in relation to the interests they are
    treated as having respectively under the Companies Act 1985 (the Act), and 

(c) on behalf of Schroders plc., our holding company, which is treated as 
    having an interest in all of the above shares under the Act by virtue of
    its ownership of SIMNA Inc, SUTL and ourselves. 


LETTER FROM SCHRODER INVESTMENT MANAGEMENT LIMITED 





                               SCHEDULE A 

                               SENIOR PLC 

                            10p ORDINARY SHARES 

REGISTRATION                                                       AMOUNT

Bank of New York                                                2,421,100  
British Coal Staff Superannuation a/c: P                        2,177,028  
Chase Nominees                                                  1,344,000 
Mineworkers' Pension Scheme a/c: R                                936,280  
MSS Nominees Limited a/c: 809955                                  402,000  
Morgan Nominees Limited                                         2,000,000
Nortrust Nominees Limited                                       2,102,568  
RBSTB Nominees Limited                                          5,064,200  
State Street Nominees Limited                                     658,000  
State Street Nominees Limited a/c: 5H57                         1,840,500
                                                               ---------- 
                                                               18,945,676 
                                                               ==========

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