Blocklisting Interim Review

Halma PLC
29 July 2005


                               HALMA p.l.c.

                                SCHEDULE 5


                     BLOCKLISTING SIX MONTHLY RETURN

                                         
1.    Name of company:                                    Halma p.l.c.

2.    Name of scheme:                                     1990 Share Option Scheme

3.    Period of return:                                   From 1 January 2005  to 30 June 2005


4.    Number and class of share(s) (amount of stock/      389,561
      debt security) not issued under scheme at start
      of period:

5.    Number of shares issued/allotted under scheme       17,466
      during period:

6.    Balance under scheme not yet issued/allotted at     372,095
      end of period:

7.    Number and class of share(s) (amount of stock/      471,666 10p ordinary shares admitted 12 July
      debt securities) originally listed and the date     2004
      of admission:

Please confirm total number of shares in issue at the     368,818,385
end of the period in order for us to update our
records:



                     BLOCKLISTING SIX MONTHLY RETURN


1.    Name of company:                                    Halma p.l.c.

2.    Name of scheme:                                     1996 Unapproved Share Option Scheme

3.    Period of return:                                   From 1 January 2005  to 30 June 2005


4.    Number and class of share(s) (amount of stock/      588,008
      debt security) not issued under scheme at start
      of period:


5.    Number of shares issued/allotted under scheme       177,599
      during period:


6.    Balance under scheme not yet issued/allotted at     410,409
      end of period:


7.    Number and class of share(s) (amount of stock/      1,400,000 10p ordinary shares admitted 30
      debt securities) originally listed and the date     July 2003
      of admission:


Please confirm total number of shares in issue at the     368,818,385
end of the period in order for us to update our
records:



                    BLOCKLISTING SIX MONTHLY RETURN


1.    Name of company:                                    Halma p.l.c.

2.    Name of scheme:                                     1999 Company Share Option Plan

3.    Period of return:                                   From 1 January 2005  to 30 June 2005


4.    Number and class of share(s) (amount of stock/      1,180,300
      debt security) not issued under scheme at start
      of period:


5.    Number of shares issued/allotted under scheme       0
      during period:


6.    Balance under scheme not yet issued/allotted at     1,180,300
      end of period:


7.    Number and class of share(s) (amount of stock/      1,200,000 10p ordinary shares admitted 16
      debt securities) originally listed and the date     July 2001 (covering 4,700,000 shares in
      of admission:                                       total)


Please confirm total number of shares in issue at the     368,818,385
end of the period in order for us to update our
records:



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