Holding(s) in Company

Halma PLC
09 May 2006


                                               HALMA p.l.c.

                          INTEREST NOTIFIED UNDER SECTION 198 COMPANIES ACT 1985



Halma p.l.c. received the following notification on 9 May 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                             51,562,910


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)(b) of the Companies Act 1985 (also see table below):


SANDERSON                              12,876,000


Halma p.l.c. has the following shares in that class:


HALMA p.l.c.                           369,179,280


As such, Silchester has an interest over 17.46% of the shares of that class and, of that,   two of
Silchester's clients control 8.98% and 3.81%.  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:  369,179,280





Silchester International Investors Limited

Client ownership:  51,562,910

% of Shares:       13.97%


Silchester Account                   Nominee                   Silchester  Silchester current % holding at
                                                                   voting        shareholding fund level
                                                                authority
Silchester International Investors   Northern Trust Co                Yes          14,082,160          3.81
International Value Equity Group
Trust


Silchester International Investors   Northern Trust Co                Yes           2,251,079          0.61
Tobacco Free International Value
Equity Trust


Silchester International Investors   Northern Trust Co                Yes          33,145,569          8.98
International Value Equity Trust


The Calleva Trust                    Northern Trust Co                Yes           2,084,102          0.56


                                     Total                                         51,562,910








Sanderson Asset Management Limited

Sanderson Asset Management client ownership:  12,876,000

% of Shares:    3.49%


Sanderson Account                    Nominee                    Sanderson   Sanderson current % holding at
                                                                   voting        shareholding fund level
                                                                authority
BUST                                 Northern Trust Co                Yes           5,631,000          1.53
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             320,000          0.09
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              74,000          0.02
TRAY                                 Northern Trust Co                Yes           1,109,600          0.30
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                        12,876,000






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.




                      This information is provided by RNS
            The company news service from the London Stock Exchange