Holding(s) in Company

Halma PLC
09 January 2006


                                  HALMA p.l.c.

                INTEREST NOTIFIED UNDER SECTION 198 COMPANIES ACT 1985

Halma p.l.c. received the following notification on 9 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                             63,951,278

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                              12,611,000

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 20.74% of the shares of that class and, of that,   two of
Silchester's clients control 10.99% and 4.85%.  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:  63,951,278

% of Shares:         17.32%


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

Silchester International Investors  Northern Trust Co                   Yes          17,906,231          4.85
International Value Equity Group
Trust


Silchester International Investors  Northern Trust Co                   Yes           2,869,498          0.78
Tobacco Free International Value
Equity Trust


Silchester International Investors  Northern Trust Co                   Yes          40,590,384         10.99
International Value Equity Trust


The Calleva Trust                   Northern Trust Co                   Yes           2,585,165          0.70


                                    Total                                            63,951,278








Sanderson Asset Management Limited

Sanderson Asset Management ownership:  12,611,000

% of Shares:    3.42%


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

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
HOOK                                 Northern Trust Co                   Yes             84,000          0.02
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                           12,611,000






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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