Holding in Company

Diploma PLC 10 October 2001 LETTER TO: DIPLOMA PLC Pursuant to Section 198 of the Companies Act 1985 (the 'Act') we hereby notify you that: (a) J O Hambro Capital Management Limited ('JOHCM'), Ground Floor, Ryder Court, 14 Ryder Street, London SW1Y 6QB is a party to an agreement to which section 204 of the Act applies (the 'Agreement'). The other parties to this agreement are:- North Atlantic Smaller Companies Investment Trust PLC ('NASCIT') of Ground Floor, Ryder Court, 14 Ryder Street, London SW1Y 6QB, and Oryx International Growth Fund Limited ('ORYX'), PO Box 208, Bermuda House, St Julian's Avenue, St Peter Port, Guernsey CI. (b) As at 10 October 2001, JOHCM was interested for the purposes of the Act in 1,467,000 ordinary shares in the relevant share capital, as defined in section 198(2) of the Act, of Diploma PLC (the 'Relevant Shares'), which represents 5.83% of that Class of capital based on an issued share capital of 25,164,000 ordinary shares. (c) 2,292,000 of the Relevant Shares are shares in which JOHCM will be interested by virtue of sections 204 and 205 of the Act. (d) The Relevant Shares are held or will be held in the following registered names: Bank of New York Nominees Limited 525,000 HSBC Global Custody London Limited 300,000 Goldman Sachs International TNA 277,000 Goldman Sachs International THO 120,000 Goldman Sachs International THT 56,000 Goldman Sachs International TEU 1,014,000 Total 2,292,000 shares = 9.11% LETTER FROM: J O HAMBRO CAPITAL MANAGEMENT LIMITED LETTER TO: DIPLOMA PLC Pursuant to Section 198 of the Companies Act 1985 (the 'Act') we hereby notify you that: (a) North Atlantic Smaller Companies Investment Trust PLC, Ground Floor, Ryder Court, 14 Ryder Street, London SW1Y 6QB is a party to an agreement to which section 204 of the Act applies (the 'Agreement'). The other parties to this agreement are:- J O Hambro Capital Management Limited ('JOHCM') of Ground Floor, Ryder Court, 14 Ryder Street, London SW1Y 6QB, and Oryx International Growth Fund Limited ('ORYX'), PO Box 208, Bermuda House, St Julian's Avenue, St Peter Port, Guernsey CI. (e) As at 10 October 2001, NASCIT was interested for the purposes of the Act in 525,000 ordinary shares in the relevant share capital, as defined in section 198(2) of the Act, of Diploma PLC (the 'Relevant Shares'), which represents 2.09% of that Class of capital based on an issued share capital of 25,164,000 ordinary shares. (f) 2,292,000 of the Relevant Shares are shares in which NASCIT will be interested by virtue of sections 204 and 205 of the Act. (g) The Relevant Shares are held or will be held in the following registered names: Bank of New York Nominees Limited 525,000 HSBC Global Custody London Limited 300,000 Goldman Sachs International TNA 277,000 Goldman Sachs International THO 120,000 Goldman Sachs International THT 56,000 Goldman Sachs International TEU 1,014,000 Total 2,292,000 shares = 9.11% LETTER FROM: NORTH ATLANTIC SMALLER COMPANIES INVESTMENT TRUST PLC

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Diploma (DPLM)
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