Holding(s) in Company

Diploma PLC
14 October 2003

Letter to:  Diploma Plc
Dated:      October 13, 2003

Enclosed are amended notifications of disclosable interests under the U.K.
Companies Act 1985. Please note that while this information details the
disclosable interests of more than one entity, the enclosed disclosure
constitutes separate notifications of interest which have been combined solely
for purposes of clarity and efficiency. It is not intended to indicate that any
of these entities act as a group or in concert with respect to these interests.

These disclosures are made in the interest of conformity with the Companies Act.
The Interest detailed herein were acquired solely for investment purposes. For
disclosure purposes, holdings should be represented as Fidelity International
Limited (FIL) and its direct and indirect subsidiaries, being non-beneficial
holders.



Amendment #3

NOTIFICATIONS UNDER SECTIONS 198 TO 202 -- UK COMPANIES ACT

1. Company in which shares are held:   DIPLOMA PLC

2. Notifiable Interest:    ORDINARY SHARES


           Fidelity International Limited (FIL)
           P.O. BOX HM 670
           Hamilton HMCX, Bermuda

           Parent holding company for various direct and indirect subsidiaries,
           including Fidelity Investment Services Ltd. (FISL), investment 
           manager for various non-US investment companies and institutional 
           clients. (See Schedule A for listing of Registered Shareholders and 
           their holdings).

3.     The notifiable interests also comprise the notifiable interest of

           Mr Edward C Johnson 3d
           82 Devonshire Street
           Boston, MA 02109

           A principal shareholder Fidelity International Limited.

4.     The notifiable interests include interest held on behalf of authorized
       unit trust schemes in the U.K., notwithstanding the exemption from 
       reporting pursuant to Section 209 (1)(h) of the Companies Act 1985.

5.     These notifications of disclosable interests constitute separate
       notifications of interest in the shares and are combined solely for 
       the purposes of clarity and efficiency. Nothing herein should be taken to 
       indicate that Fidelity International Limited and its direct and indirect 
       subsidiaries, or Mr Edward C Johnson 3d act as a group or in concert in 
       respect of the disclosed interests, or that they are required to submit 
       these notifications on a joint basis.

6.     The disclosable interests arise under section 208(4) (b) of the Act,
       namely where a person, not being the registered holder, is entitled
       to exercise a right conferred by the holding of the shares or to 
       control the exercise of such rights, or under section 203 of the Act
       respectively.

SCHEDULE A

SECURITY: Diploma Plc                                              Amendment # 3


                      SHARES HELD   MANAGEMENT   NOMINEE/REGISTERED
                                     COMPANY     NAME

(Ordinary Shares) 

                       1,161,394      FISL       Chase Manhattan Bank London
                          12,400      FIL       Brown Brothers Harriman Ltd. LUX
                         148,300      FIL        Chase Manhattan Bank London
                          23,300      FIL        State Street Bank & Trust

                     
TOTAL ORDINARY SHARES: 1,345,394

CURRENT OWNERSHIP PERCENTAGE:  5.94%

SHARES IN ISSUE:       22,647,910

CHANGE IN HOLDINGS SINCE
 LAST FILING:          (160,864) ordinary shares



Letter from: Fidelity Management & Research Company





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