Director/PDMR Shareholding

Halma PLC
15 March 2006


                                 HALMA p.l.c.
 
                          PDMR'S SHARE TRANSACTION



Halma has received notification from John Campbell, a person discharging
managerial responsibilities, that on 7 March 2006 he re-organised his 401(k)
retirement plan assets and transferred US $28,887 in cash in the plan to a
unitised, US dollar denominated holding in Halma p.l.c. ordinary shares in the
same plan.

On 7 March 2006 the closing share price of an ordinary share in Halma p.l.c. was
191.75p and the prevailing exchange rate of US dollars to British sterling was
1.751:1.  Using these figures the re-organisation of John Campbell's 401(k)
retirement plan increased his interest in Halma p.l.c. ordinary shares by 8,604
shares on 7 March 2006.  Due to the unitised nature of the 401(k) retirement
plan and fluctuations in exchange rates, the precise number of ordinary shares
in Halma p.l.c. in which John Campbell is interested may also fluctuate.

In addition, on 14 March 2006 John Campbell exercised an option over 11,600
shares in Halma p.l.c.'s ordinary shares at an exercise price of 139.5p per
share.  In order to finance this exercise, John sold 8,445 shares at 192.25p per
share from his existing holding on 14 March 2006.

After the above transactions, the beneficial holding of John Campbell, including
family interests, in the ordinary shares of Halma increases to 39,023 shares
(0.0105% of the issued ordinary share capital).


For further information, please contact:



Carol Chesney                           [phone]
Company Secretary, Halma p.l.c.





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




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