Director/PDMR Shareholding

Halma PLC
04 December 2007


                                     HALMA p.l.c.

                            PDMR INCREASES SHAREHOLDING


At a Meeting of the Share Plans Committee of the Board of Halma p.l.c. held on 4
December 2007, 6,900 additional ordinary shares in the Company were allotted
under the provisions of the 1999 Company Share Option Plan to John Campbell, a
person discharging managerial responsibilities, following his exercise of share
options. The exercise price was 111.00p per share.

After the above transaction, as at 4 December 2007, the beneficial holding of
John Campbell, including family interests, in the ordinary shares of Halma
p.l.c. increases by 6,900 shares to 57,555 shares (0.015% of the issued ordinary
share capital excluding treasury shares).

Following the issue of ordinary shares as a result of share options exercised on
4 December 2007, the issued ordinary share capital of the Company, excluding
treasury shares, is increased 372,920,551 shares.



Contact for further information:            Andrew Williams
                                            Chief Executive, Halma p.l.c.
                                            Tel: [phone]



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





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