Holding in Company

Senior PLC
12 October 2001


                  DEALINGS BY SUBSTANTIAL SHAREHOLDERS


1)   NAME OF COMPANY

SENIOR PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

SCHRODERS 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)   ( N/A %) of issued Class

7)   Number of shares/amount of stock disposed



8)   ( N/A %) of issued Class

9)   Class of security

ORDINARY SHARES OF 10P EACH

10)  Date of transaction



11)  Date company informed

12 OCT 2001

12)  Total holding following this notification

58,360,148
               
13)  Total percentage holding of issued class following this notification

18.986%

14)  Any additional information



15)  Name of contact and telephone number for queries

Y. BARNES      01923 714716

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

L GRANT
GROUP COMPANY SECRETARY

     Date of Notification   12 OCT 2001...............




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 53,860,148 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)   20,582,443 shares registered or to be registered in the name of our
      wholly-owned subsidiary nominee company, Schroder Nominees Limited
      (Schroder Nominees),

(ii)  13,595,697 shares held in (a) unit trust(s) operated and managed by
      another wholly-owned subsidiary, Schroder Unit Trusts Limited (SUTL),
      and registered or to be registered in the name of Chase Nominees
      Limited.

(iii) 19,682,008 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 58,360,148 shares, representing some  
18.986% of the total number of  shares in issue, namely 307,380,913 shares.

This notification is made to you:-

(a)   in respect of our interest as investment managers and also by virtue of   
      the fact that we are the parent company of SUTL,

(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, Schroder Hermes and ourselves.


Letter from Schroder Investment Management Limited




                             SCHEDULE A

                     SENIOR ENGINEERING GROUP PLC

                          10p ORDINARY SHARES


REGISTRATION                                           AMOUNT

Bank of New York                                       1,871,100
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
MSS Nominees Limited a/c:  846435                      1,305,100
Nortrust Nominees Limited                              1,650,000
RBSTB Nominees Limited                                 3,667,000
State Street Nominees Limited                            739,000
State Street Nominees Limited a/c: 4L9Q                  500,000
State Street Nominees Limited a/c: 5H57                1,840,500
State Street Nominees Limited a/c: JD19                3,250,000

                                                      19,682,008