Holding(s) in Company

Halma PLC
04 August 2006


                                   HALMA p.l.c.

               INTEREST NOTIFIED UNDER SECTION 198 COMPANIES ACT 1985

Halma p.l.c. received the following notification on 2 August 2006 from 
Silchester International Investors Limited.

Silchester International Investors Limited ('Silchester') acts as an Investment
Manager for a number of commingled funds (its 'Clients').  In acting for its
Clients, Silchester are given full discretion over their investments, and are
empowered to vote on their behalf.  However, Silchester do not act as their
Custodian, and therefore shares are not held in the name of Silchester, but in
the nominee name of its Clients' Custodian bank.

Recent purchases/sales of shares in Halma p.l.c. by Silchester, on behalf of its
clients, have resulted in it having control over the following shares (also see
below):

SILCHESTER                             40,198,427

Silchester's records show that Halma p.l.c. have the following shares in that 
class:

HALMA p.l.c.                           371,595,324

Silchester exercises control over 10.82% of the shares of that class, and of 
that, one of their clients controls 6.96%.

Silchester International Investors Limited - client ownership:

Company:                        Halma p.l.c.
Share Class:                    Ordinary
Issued Shares:                  371,595,324

SII client ownership:           40,198,427
% of Shares:                    10.82%


Silchester Account                  Nominee                 Silchester  Silchester current % holding at
                                                                voting        shareholding fund level
                                                             authority

Silchester International Investors  Northern Trust                 Yes          10,950,037          2.95
International Value Equity Group    Company
Trust

Silchester International Investors  Northern Trust                 Yes           1,667,325          0.45
Tobacco Free International Value    Company
Equity Trust

Silchester International Investors  Northern Trust                 Yes          25,876,335          6.96
International Value Equity Trust    Company

The Calleva Trust                   Northern Trust                 Yes           1,704,730          0.46
                                    Company

                                                                 Total          40,198,427


Contact for further information:                    Carol Chesney
                                                    Company Secretary, Halma p.l.c
                                                    Tel: [phone]




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




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