Treasury Stock

HALMA plcHALMA CLOSE PERIOD SHARE REPURCHASE PROGRAMME

Halma plc announces that it has commenced an irrevocable, non-discretionary programme to purchase its own ordinary shares on its own behalf during its close period which commences on 15 April 2013 and ends on 13 June 2013. 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 plc Performance Share Plan 2005.

Any acquisitions will be effected within certain pre-set parameters, and in accordance with both Halma's general authority to repurchase shares and Chapter 12 of the Listing Rules which requires that the maximum price paid be limited to no more than 105 per cent of the average middle market closing price of Halma's ordinary shares for the 5 dealing days preceding the date of urchase. Halma confirms that it currently has no unpublished price sensitive information.

Contact for further information:

Carol ChesneyCompany Secretary, Halma plcTel: +44 (0)1494 721111

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