Director/PDMR Shareholding

Halma PLC
25 March 2008


                                      HALMA p.l.c.

                       DIRECTOR'S and PDMRs' INTEREST IN SHARES


DIRECTOR

On 25 March 2008, Halma p.l.c. received notification from Mr K J Thompson,
Director of the Company, that he had sold 90,000 shares at 183.875 pence per
share and his wife, Mrs M M A Thompson, had purchased 90,000 shares at 183.875
pence per share on 25 March 2008.  These transactions were entered into in the
light of forthcoming changes to Capital Gains Tax rules effective 6 April 2008.

After the above transactions, the beneficial holding of Mr Thompson, including
family interests, in the ordinary shares of Halma p.l.c. remains unchanged at
114,301 shares (0.0306% of the issued ordinary share capital excluding treasury
shares).

PDMRs

Halma has received notification from John Campbell and Adam Meyers, both PDMRs,
relating to their beneficial interests in the ordinary shares of Halma p.l.c. 
As a result of an Internal Revenue Service-related refund of contributions,
proportionate to their existing shareholding under the US 401(k) plan, the
interests held by each of them decrease as follows:

JOHN CAMPBELL

401(k) plan shares prior to proportionate refund                          9,050
Decrease in number of shares due to refund                                   72
Current holding through the 401(k) plan                                   8,978

After the above transaction, the beneficial holding of John Campbell, including
family interests, in the ordinary shares of Halma decreases to 57,727 shares
(0.0154% of the issued ordinary share capital excluding treasury shares).

ADAM MEYERS

401(k) plan shares prior to proportionate refund                          4,569
Decrease in number of shares due to refund                                   25
Current holding through the 401(k) plan                                   4,544

After the above transaction, the beneficial holding of Adam Meyers in the 
ordinary shares of Halma decreases to 41,689 shares (0.0111% of the issued 
ordinary share capital excluding treasury shares).

For further information, please contact:

Andrew Williams                     Tel  [phone]
Chief Executive, 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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