Holding(s) in Company

Halma PLC
01 August 2006


                                               HALMA p.l.c.

                          INTEREST NOTIFIED UNDER SECTION 198 COMPANIES ACT 1985



Halma p.l.c. received the following notification on 1 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.



Silchester previously disclosed its holding in Halma p.l.c. jointly with shares
controlled by Sanderson Asset Management Limited ('Sanderson') for the purposes
of Section 198 of the Companies Act 1985.  These disclosures were required
because, prior to 28 July 2006, Silchester was deemed to have an 'interest' in
shares that Sanderson controls by virtue of Section 203(2)(b) of the Companies
Act 1985 due to Silchester's control of more than one-third of the voting
capital of Sanderson.  On 28 July 2006, Sanderson amended its Articles to limit
Silchester's voting rights in Sanderson to 19.9%.



Due to this change in structure, Silchester is no longer required to jointly
disclose shares in Halma p.l.c. under Section 198 of the Companies Act 1985. 
Silchester, as at the close of business on 28 July 2006, has an interest in the
following shares (also see below):


SILCHESTER                             40,540,871


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


HALMA p.l.c.                           371,549,138


Silchester exercises control over 10.91% of the shares of that class, and of 
that, one of their clients controls 7.02%.



Silchester International Investors Limited - client ownership:



Company:              Halma p.l.c.

Share Class:          Ordinary

Issued Shares:        371,549,138



SII client ownership: 40,540,871

% of Shares:               10.91%


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


Silchester International Investors   Northern Trust Company           Yes          11,043,137          2.97
International Value Equity Group
Trust


Silchester International Investors   Northern Trust Company           Yes           1,763,857          0.47
Tobacco Free International Value
Equity Trust


Silchester International Investors   Northern Trust Company           Yes          26,080,973          7.02
International Value Equity Trust


The Calleva Trust                    Northern Trust Company           Yes           1,652,904          0.44


                                                            Total                  40,540,871





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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