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Halma PLC 25 April 2008 HALMA p.l.c. NOTIFICATION OF MAJOR INTERESTS IN SHARES In conformity with the Transparency Directive, Halma p.l.c. ('Halma') is required to announce to the market the receipt of notifications of major interests in shares. Halma received the notice below on 24 April 2008 in respect of Sanderson Asset Management Limited. Carol Chesney Company Secretary, Halma p.l.c. Tel +44 (0)1494 721111 1 Identity of the issuer or the underlying issuer of existing HALMA p.l.c. shares to which voting rights are attached: 2 Reason for the notification: An acquisition or disposal of voting rights 3 Full name of person(s) subject to the notification obligation: Sanderson Asset Management Ltd 4 Full name of shareholder(s) (if different from 3): 5 Date of the transaction (and date on which the threshold is crossed 23 April 2008 or reached if different): 6 Date on which issuer notified: 24 April 2008 7 Threshold(s) that is/are crossed or reached: 4% 8 Notified details: Not applicable A: Voting rights attached to shares Class/type of shares Situation previous to the triggering transaction If possible using the ISIN code Number of shares Number of voting rights GB0004052071 14,709,762 14,709,762 Class/type of shares Resulting situation after the triggering transaction If possible using the ISIN code Number of shares Number of voting rights % of voting rights Direct Indirect Direct Indirect GB0004052071 15,075,762 15,075,762 0 4.04% 0% B: Financial instruments Resulting situation after the triggering transaction Type of financial Expiration date Exercise/Conversion Number of voting rights % of voting rights instrument Period/Date that may be acquired if the instrument is exercised/converted N/A N/A N/A N/A N/A Total (A+B) Number of voting rights % of voting rights 15,075,762 4.04% 9 Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: Not applicable Proxy Voting: 10 Name of the proxy holder: Sanderson Asset Management Ltd 11 Number of voting rights proxy holder will cease to Not applicable hold: 12 Date on which proxy holder will cease to hold voting Not applicable rights: 13 Additional information: Sanderson Asset Management Ltd ('Sanderson') acts as investment manager for our clients. In acting for our Clients, Sanderson are given full discretion over their investments and are empowered to vote on their behalf. However, we do not act as our Clients' custodian and therefore shares are not held in our name but in the name of each Client's custodian bank. 14 Contact for further information: Jeremy Knowles 15 Contact telephone number: 020 7468 5977 Annex to Notification of Major Interests in Shares A: Identity of the person or legal entity subject to the notification obligation Full name (including legal form for legal entities) Sanderson Asset Management Ltd Contact address (registered office for legal entities) Heathcoat House 20 Savile Row, 6th Floor London W1S 3PR Phone number 020 7468 5977 Other useful information (at least legal representative for Attn: Jeremy Knowles legal persons) B: Identity of the notifier, if applicable Full name Sanderson Asset Management Ltd Contact address Heathcoat House 20 Savile Row, 6th Floor London W1S 3PR Phone number 020 7468 5977 Other useful information (eg functional relationship with the Attn: Jeremy Knowles person or legal entity subject to the notification obligation) A copy of this announcement, together with other information about Halma, may be viewed on its web site www.halma.com. This information is provided by RNS The company news service from the London Stock Exchange

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Halma (HLMA)
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