SHAREHOLDER INFORMATION

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03 July 2008

TR-1: Notifications of Major Interests in Shares

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Diploma Plc

2. Reason for notification (yes/no)
An acquisition or disposal of voting rights	X
An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached
An event changing the breakdown of voting rights
Other (please specify):______________

3. Full name of person(s) subject to notification obligation:	Newton Investment Management Limited
4. Full name of shareholder(s) (if different from 3):
5. Date of transaction (and date on which the threshold is crossed or reached if different):	02/07/08
6. Date on which issuer notified:	03/07/08
7. Threshold(s) that is/are crossed or reached:	Increase from 3.99% to 4.39%

8: Notified Details				Transfer in of 446,015 (not a market transaction) Sale of 2,573
A: Voting rights attached to shares
Class/type of sharesIf possible use ISIN code	Situation previous to the triggering transaction		Resulting situation after the triggering transaction
	Number of shares	Number of voting rights	Number of shares	Number of voting rights		Percentage of voting rights
				Direct	Indirect	Direct	Indirect
Ordinary Shares Sedol 0182663	4,522,250	3.99%	N/A	N/A	4,965,692	N/A	4.39%

B: Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Expiration date	Exercise/ conversion period/date	No. of voting rights that may be acquired (if the instrument exercised/converted)	Percentage of voting rights

9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectively held, if applicable:

Newton Investment Management Limited hold these shares as a discretionary Investment Manager.

Proxy Voting:
10. Name of proxy holder:	N/A
11. Number of voting rights proxy holder will cease to hold:	N/A
12. Date on which proxy holder will cease to hold voting rights:	N/A