Holding(s) in Company

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 5 May 2011 from Norges Bank.

Carol Chesney

Company Secretary, Halma p.l.c.

Tel +44 (0)1494 721111

1

Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Halma p.l.c.

GB0004052071

2

Reason for the notification:

An acquisition or disposal of voting rights

3

Full name of person(s) subject to the notification obligation:

Norges Bank

4

Full name of shareholder(s):

N/A

5

Date of the transaction and date on which the threshold is crossed or reached:

4 May 2011

6

Date on which issuer notified:

5 May 2011

7

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

3%

8

Notified details:

A: Voting rights attached to shares

Class/type of shares If possible using the ISIN code

Situation previous to the triggering transaction

Number of shares

Number of voting rights

GB0004052071

11,286,204

11,286,204

Class/type of shares If possible using the ISIN code

Resulting situation after the triggering transaction

Number of shares

Number of voting rights

% of voting rights

Direct

Indirect

Direct

Indirect

GB0004052071

11,293,494

11,293,494

3.00%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/Conversion Period

Number of voting rights that may be acquired if the instrument is ex-ercised/converted

% of voting rights

N/A

N/A

N/A

N/A

N/A

C: Financial instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/

conversion period

Number of voting rights instrument refers to

% of voting rights

N/A

N/A

N/A

N/A

Nominal

Delta

N/A

N/A

Total (A+B)

Number of voting rights

% of voting rights

11,293,494

3.00%

9

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

N/A

Proxy Voting:

10

Name of the proxy holder:

Norges Bank

11

Number of voting rights proxy holder will cease to hold:

N/A

12

Date on which proxy holder will cease to hold voting rights:

N/A

13

Additional information:

None

14

Contact for further information:

Jonas Lexmark

15

Contact telephone number:

+47 24 07 31 34

A copy of this announcement, together with other information about Halma, may be viewed on its web site www.halma.com.