Holding in Company

Senior PLC
17 September 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

17 SEPT 2001

12)  Total holding following this notification

59,426,808
               
13)  Total percentage holding of issued class following this notification

19.333%

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

     Date of Notification ......17 SEPT 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 54,926,808 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)  21,839,103 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) 19,492,008 shares neither registered nor to be registered in the name of
      Schroder Nominees Limited. The registration details are shown in the
      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 59,426,808 shares, representing some 
19.333% 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 SUTL in relation to the interest it is treated as having 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 ourselves.


FROM:    BRENDA VERSTEEG
         REGULATORY REPORTING OFFICER
         SCHRODERS

                                    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 LIMITED                                       1,344,000
MINEWORKERS' PENSION SCHEME A/C: R                             936,280
MSS NOMINEES LIMITED A/C: 767412                                70,000
MSS NOMINEES LIMITED A/C: 809955                               402,000  
MSS NOMINEES LIMITED A/C: 846435                               965,100
NORTRUST NOMINEES LIMITED                                    1,650,000
RBSTB NOMINEES LIMITED                                       3,647,000
RBSTB NOMINEES LIMITED A/C: AAUKPS                             100,000
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
                                                            19,492,008 
                             



END