Holding(s) in Company

Diploma PLC
16 January 2004


Letter to Diploma PLC

Disclosure of Interest in shares Under Section 198

Consequent upon transfer into management of 42,300 shares on the 14 January
2004, Legal & General Group Plc companies are now the beneficial owners of the
following number of shares which are not subject to a concert party and will be
registered as follows:
 
Material Interest

HSBC Global Custody Nominee (UK) Ltd A/C 914945                   9,590 
HSBC Global Custody Nominee (UK) Ltd A/c 775245                 100,000 
HSBC Global Custody Nominee (UK) Ltd A/c 357206                 711,928  
HSBC Global Custody Nominee (UK) Ltd A/c 747381                  43,200 
HSBC Global Custody Nominee (UK) Ltd A/c 866203                  32,517 
HSBC Global Custody Nominee (UK) Ltd A/c 360509                  29,450
 
                                                                926,685    4.09%
 
Please note that this percentage is based on our understanding that your issued
share capital is 22,647,911, which is the figure quoted by Exshare.

Julia Stone                         Lee Toms
Authorised Signatory                Authorised Signatory       


From: Legal & General Investment Management Limited

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