Holding(s) in Company

Halma PLC
25 April 2008


                              HALMA p.l.c.



               NOTIFICATION OF MAJOR INTERESTS IN SHARES




In conformity with the Transparency Directive, Halma p.l.c. ('Halma') is
required to announce to the market the receipt of notifications of major
interests in shares.  Halma received the notice below on 24 April 2008 in
respect of Sanderson Asset Management Limited.



Carol Chesney

Company Secretary, Halma p.l.c.

Tel [phone]




1     Identity of the issuer or the underlying issuer of existing     HALMA p.l.c.
      shares to which voting rights are attached:



2     Reason for the notification:                                    An acquisition or disposal of voting
                                                                      rights



3     Full name of person(s) subject to the notification obligation:  Sanderson Asset Management Ltd




4     Full name of shareholder(s) (if different from 3):




5     Date of the transaction (and date on which the threshold is crossed   23 April 2008
      or reached if different):


6     Date on which issuer notified:                                        24 April 2008




7     Threshold(s) that is/are crossed or reached:                          4%




8     Notified details:                                                     Not applicable




A:  Voting rights attached to shares




Class/type of shares   Situation previous to the triggering transaction
If possible using the
ISIN code
                       Number of shares                         Number of voting rights
GB0004052071           14,709,762                               14,709,762




Class/type of shares   Resulting situation after the triggering transaction
If possible using the
ISIN code
                       Number of shares          Number of voting rights       % of voting rights
                                                 Direct          Indirect      Direct      Indirect
GB0004052071           15,075,762                15,075,762      0             4.04%       0%






B:  Financial instruments




Resulting situation after the triggering transaction


Type of financial    Expiration date Exercise/Conversion     Number of voting rights % of voting rights
instrument                           Period/Date             that may be acquired if
                                                             the instrument is
                                                             exercised/converted
N/A                  N/A             N/A                     N/A                     N/A




Total (A+B)


Number of voting rights                               % of voting rights
15,075,762                                            4.04%




9     Chain of controlled undertakings through which the voting rights and/or the financial instruments are
      effectively held, if applicable:


      Not applicable




Proxy Voting:


10    Name of the proxy holder:                              Sanderson Asset Management Ltd


11    Number of voting rights proxy holder will cease to     Not applicable
      hold:


12    Date on which proxy holder will cease to hold voting   Not applicable
      rights:




13    Additional information:                                   Sanderson Asset Management Ltd ('Sanderson')
                                                                acts as investment manager for our clients.
                                                                In acting for our Clients, Sanderson are
                                                                given full discretion over their investments
                                                                and are empowered to vote on their behalf.
                                                                However, we do not act as our Clients'
                                                                custodian and therefore shares are not held
                                                                in our name but in the name of each Client's
                                                                custodian bank.


14    Contact for further information:                          Jeremy Knowles




15    Contact telephone number:                                 020 7468 5977






Annex to Notification of Major Interests in Shares




A:  Identity of the person or legal entity subject to the notification obligation


Full name (including legal form for legal entities)            Sanderson Asset Management Ltd


Contact address (registered office for legal entities)         Heathcoat House

                                                               20 Savile Row, 6th Floor

                                                               London W1S 3PR


Phone number                                                   020 7468 5977


Other useful information (at least legal representative for    Attn: Jeremy Knowles
legal persons)




B:  Identity of the notifier, if applicable


Full name                                                      Sanderson Asset Management Ltd


Contact address                                                Heathcoat House

                                                               20 Savile Row, 6th Floor

                                                               London W1S 3PR


Phone number                                                   020 7468 5977


Other useful information (eg functional relationship with the  Attn: Jeremy Knowles
person or legal entity subject to the notification obligation)






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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