Holding in Company

Diploma PLC
11 August 2000


Letter to: Diploma Plc         Dated: 9 August 2000

Re: S.198 Companies Act 1985: as amended by The Disclosure of Interest in
Shares (Amendment) Regulations 1993

In accordance with the Companies Act 1985, (as amended) I write to notify you
that Phillips & Drew Life Limited has an interest in 3,024,695 ord 5p shares
of the Company. This represents 12.01% of the issued share capital of the
Company.

Below is a list of the Registered holders.

Phillips & Drew Life Limited is a subsidiary of UBS Asset Management Holding
(No.2) Limited which is also treated as having an interest in the above shares. 
We are authorised to make this aggregate disclosure on behalf of UBS Asset
Management Holding (No.2) Limited the registered address of which is:

                   Triton Court
                   14 Finsbury Square
                   London EC2A 1PD

Letter from: Phillips & Drew



              Total Issued Share Capital - 25,164,345


Name                                                  Quantity

PHILDREW NOMINEES LIMITED            A/C LF09            92,062

PHILDREW NOMINEES LIMITED            A/C LF20         2,932,633

                                                      3,024,695

                                                         12.01%