Treasury Stock

HALMA p.l.c. TREASURY SHARE TRANSACTION

Halma p.l.c. announces that it has purchased 246,000 of its ordinary shares on 29 September 2010 through J.P. Morgan Cazenove at a price of 308.3p per share. The purchased shares will not be subject to cancellation and will all be held as treasury shares in order to satisfy awards under the Halma p.l.c. Performance Share Plan 2005.

Following the above transaction, Halma p.l.c. holds 1,312,008 ordinary shares as treasury shares. The total number of ordinary shares in issue (excluding shares held as treasury shares) is 376,707,626.

Contact for further information:

Kevin J Thompson Director, Halma p.l.c. Tel: +44 (0)1494 721111

A copy of this announcement, together with other information about Halma, may be viewed on its website: www.halma.com