Holding(s) in Company

Halma PLC
04 January 2006


                                                HALMA p.l.c.

                           INTEREST NOTIFIED UNDER SECTION 198 COMPANIES ACT 1985



Halma p.l.c. received the following notification on 4 January 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.



In addition, Silchester holds 49.9% of the issued share capital of Sanderson Asset Management Limited ('
Sanderson'), a UK limited company that also acts as an Investment Manager for a number of commingled funds
and separate accounts.  In acting for its clients, Sanderson are given full discretion over their
investments, and are empowered to vote on their behalf.  However, Sanderson do not act as its clients'
Custodian and therefore shares are not held in Sanderson's name, but in the nominee name of Sanderson's
clients' Custodian bank.



Silchester's share ownership in Sanderson does not allow Silchester to exercise any direct or indirect
control over Sanderson's investment strategy, philosophy or implementation, the investments that Sanderson
may purchase or sell on behalf of its clients, or the manner in which Sanderson may vote proxies that arise
from its client investments.  However, Silchester is deemed to have an 'interest' in shares that Sanderson
controls by virtue of Section 203(2)(b) of the Companies Act 1985.



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


SILCHESTER                             65,721,278


Recent purchases/sales of shares in Halma p.l.c. by Sanderson, on behalf of its clients, have resulted in
Sanderson having an interest in the following shares, and Silchester having an interest over the same shares
for the purposes of Section 203(2)(6) of the Companies Act 1985 (also see table below):


SANDERSON                              12,527,000


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




HALMA p.l.c.                           369,205,480


As such, Silchester has an interest over 21.19% of the shares of that class and, of that,   two of
Silchester's clients control 11.28% and 5%.  This interest is being notified in fulfillment of the
obligations imposed by Sections 198-202 of the Companies Act 1985. Silchester does not have an interest
mentioned in Section 208(5) of the Companies Act 1985 in any of the shares to which this notification
relates.







Registered holder(s) and the number of shares held by each of them:





Share Class:      Ordinary



Issued Shares:  369,205,480





Silchester International Investors Limited

Client ownership:  65,721,278

% of Shares:         17.80%


Silchester Account                  Nominee                 Voting Authority            Share-           % of
                                                                                        holding          Class
                                                                                        
Silchester International Investors  Northern Trust Co                    Yes         18,452,593          5.00
International Value Equity Group
Trust


Silchester International Investors  Northern Trust Co                    Yes          2,957,877          0.80
Tobacco Free International Value
Equity Trust


Silchester International Investors  Northern Trust Co                    Yes         41,654,028         11.28
International Value Equity Trust


The Calleva Trust                   Northern Trust Co                    Yes          2,656,780          0.72


                                    Total                                            65,721,278








Sanderson Asset Management Limited

Sanderson Asset Management ownership:  12,527,000

% of Shares:    3.39%


Silchester Account                   Nominee                 Voting Authority           Share-            % of
                                                                                        Holding           Class
                                                                                        
BUST                                 Northern Trust Co                    Yes         5,473,000          1.48
CAT                                  Pictet & Cie                         Yes           274,000          0.07
DYN                                  State Street                         Yes           228,000          0.06
EUF                                  State Street                         Yes           730,000          0.20
GOLF                                 Bank of New York                     Yes           198,000          0.05
GRIT                                 Northern Trust Co                    Yes         1,553,000          0.42
INGOT                                Mellon Trust                         Yes           352,000          0.10
MINI                                 State Street                         Yes           613,000          0.17
OCEAN                                Northern Trust Co                    Yes           235,000          0.06
OVAL                                 Mellon Trust                         Yes           324,400          0.09
PEARL                                Northern Trust Co                    Yes           109,000          0.03
RAIN                                 Citigroup                            Yes           278,000          0.08
STAMP                                Northern Trust Co                    Yes           191,000          0.05
TIME                                 Bank of New York                     Yes            52,000          0.01
TRAY                                 Northern Trust Co                    Yes         1,025,600          0.28
WHEAT                                Mellon Trust                         Yes           361,000          0.10
WINDY                                Northern Trust Co                    Yes           253,000          0.07
WOGAN                                Northern Trust Co                    Yes           277,000          0.08


                                                     Total                           12,527,000






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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