Blocklisting Interim Review

Smiths Group PLC
02 May 2006

02 MAY 2006

LISTING RULE LR 3.5.6

BLOCKLISTING SIX MONTHLY RETURN

1.       Name of applicant: SMITHS GROUP PLC

2.       Names of schemes:

SMITHS INDUSTRIES 1982 SAYE SHARE OPTION SCHEME

SMITHS INDUSTRIES (1984) EXECUTIVE SHARE OPTION SCHEME

SMITHS INDUSTRIES OVERSEAS EXECUTIVE SHARE OPTION SCHEME

SMITHS INDUSTRIES 1995 EXECUTIVE SHARE OPTION SCHEME

ISSUES PURSUANT TO MERGER WITH TI GROUP PLC FOLLOWING EXERCISE OF TI GROUP SHARE
OPTIONS

TI GROUP 1990 EXECUTIVE SHARE OPTION SCHEME

TI GROUP 1999 EXECUTIVE SHARE OPTION SCHEME

TI GROUP 1981 SAVINGS RELATED SHARE OPTION SCHEME

TI GROUP 1994 SAVINGS RELATED SHARE OPTION SCHEME

3.       Period of return: FROM 01.11.2005 TO 30.04.2006

4.      Balance under scheme from previous return:
SCHEME                                                                                             ORDINARY SHARES
SMITHS INDUSTRIES 1982 SAYE SHARE OPTION SCHEME                                                            289,709
SMITHS INDUSTRIES (1984) EXECUTIVE SHARE OPTION SCHEME                                                           0
SMITHS INDUSTRIES OVERSEAS EXECUTIVE SHARE OPTION SCHEME                                                    97,127
SMITHS INDUSTRIES 1995 EXECUTIVE SHARE OPTION SCHEME                                                       287,918
ISSUES PURSUANT TO MERGER WITH TI GROUP PLC FOLLOWING EXERCISE OF TI GROUP SHARE                           301,265
OPTIONS
TI GROUP 1990 EXECUTIVE SHARE OPTION SCHEME                                                                 50,107
TI GROUP 1999 EXECUTIVE SHARE OPTION SCHEME                                                                224,433
TI GROUP 1981 SAVINGS RELATED SHARE OPTION SCHEME                                                          207,513
TI GROUP 1994 SAVINGS RELATED SHARE OPTION SCHEME                                                          369,226

5.      The amount by which the block scheme has been increased, if the scheme
has been increased since the date of the last return:
SCHEME                                                                                             ORDINARY SHARES
SMITHS INDUSTRIES 1982 SAYE SHARE OPTION SCHEME                                                                  0
SMITHS INDUSTRIES (1984) EXECUTIVE SHARE OPTION SCHEME                                                           0
SMITHS INDUSTRIES OVERSEAS EXECUTIVE SHARE OPTION SCHEME                                                         0
SMITHS INDUSTRIES 1995 EXECUTIVE SHARE OPTION SCHEME                                                       760,000
ISSUES PURSUANT TO MERGER WITH TI GROUP PLC FOLLOWING EXERCISE OF TI GROUP SHARE                                 0
OPTIONS
TI GROUP 1990 EXECUTIVE SHARE OPTION SCHEME                                                                380,000
TI GROUP 1999 EXECUTIVE SHARE OPTION SCHEME                                                                190,000
TI GROUP 1981 SAVINGS RELATED SHARE OPTION SCHEME                                                                0
TI GROUP 1994 SAVINGS RELATED SHARE OPTION SCHEME                                                                0

6.       Number of securities issued/allotted under scheme during period:
SCHEME                                                                                             ORDINARY SHARES
SMITHS INDUSTRIES 1982 SAYE SHARE OPTION SCHEME                                                             53,397
SMITHS INDUSTRIES (1984) EXECUTIVE SHARE OPTION SCHEME                                                           0
SMITHS INDUSTRIES OVERSEAS EXECUTIVE SHARE OPTION SCHEME                                                         0
SMITHS INDUSTRIES 1995 EXECUTIVE SHARE OPTION SCHEME                                                       883,807
ISSUES PURSUANT TO MERGER WITH TI GROUP PLC FOLLOWING EXERCISE OF TI GROUP SHARE                                 0
OPTIONS
TI GROUP 1990 EXECUTIVE SHARE OPTION SCHEME                                                                 89,026
TI GROUP 1999 EXECUTIVE SHARE OPTION SCHEME                                                                247,410
TI GROUP 1981 SAVINGS RELATED SHARE OPTION SCHEME                                                                0
TI GROUP 1994 SAVINGS RELATED SHARE OPTION SCHEME                                                           14,110

7.       Balance under scheme not yet issued/allotted at end of period:
SCHEME                                                                                             ORDINARY SHARES
SMITHS INDUSTRIES 1982 SAYE SHARE OPTION SCHEME                                                            236,312
SMITHS INDUSTRIES (1984) EXECUTIVE SHARE OPTION SCHEME                                                           0
SMITHS INDUSTRIES OVERSEAS EXECUTIVE SHARE OPTION SCHEME                                                    97,127
SMITHS INDUSTRIES 1995 EXECUTIVE SHARE OPTION SCHEME                                                       164,111
ISSUES PURSUANT TO MERGER WITH TI GROUP PLC FOLLOWING EXERCISE OF TI GROUP SHARE                           301,265
OPTIONS
TI GROUP 1990 EXECUTIVE SHARE OPTION SCHEME                                                                341,081
TI GROUP 1999 EXECUTIVE SHARE OPTION SCHEME                                                                167,023
TI GROUP 1981 SAVINGS RELATED SHARE OPTION SCHEME                                                          207,513
TI GROUP 1994 SAVINGS RELATED SHARE OPTION SCHEME                                                          355,116

8.       Number and class of securities originally listed and the date of
admission:
SCHEME                                                                                  ORDINARY           DATE OF
                                                                                          SHARES         ADMISSION
SMITHS INDUSTRIES 1982 SAYE SHARE OPTION SCHEME                                          229,000        12/06/2001
                                                                             AND         240,000        10/07/2001
                                                                             AND         265,000        22/08/2001
                                                                             AND         600,000        19/04/2002
                                                                             AND         277,392        19/08/2002
                                                                             AND         285,306        23/06/2003
                                                                             AND         273,037        10/07/2003
                                                                             AND         282,087        12/08/2003
                                                                             AND         250,000        14/06/2004
                                                                             AND         250,000        05/08/2004
                                                                             AND         250,000        13/09/2004
                                                                             AND         200,000        03/08/2005
                                                                             AND         200,000        04/08/2005
                                                                             AND         200,000        23/08/2005
                                                                             AND         200,000        12/09/2005
SMITHS INDUSTRIES (1984) EXECUTIVE SHARE OPTION SCHEME    (SINCE 1999)                    41,342        11/03/2005
SMITHS INDUSTRIES OVERSEAS EXECUTIVE SHARE OPTION SCHEME                              NONE SINCE  1992


SMITHS INDUSTRIES 1995 EXECUTIVE SHARE OPTION SCHEME    (SINCE 1999)                     225,000        14/03/2005
                                                                             AND         220,000        04/05/2005
                                                                             AND         200,000        23/06/2005
                                                                             AND         200,000        23/09/2005
                                                                             AND         200,000        24/10/2005
                                                                             AND         190,000        17/01/2006
                                                                             AND         190,000        25/01/2006
                                                                             AND         190,000        02/02/2006
                                                                             AND         190,000        08/03/2006
ISSUES PURSUANT TO MERGER WITH TI GROUP PLC FOLLOWING EXERCISE OF TI GROUP SHARE         243,000        01/05/2001
OPTIONS
                                                                             AND         237,000        08/05/2001
                                                                             AND         238,000        11/05/2001
                                                                             AND         242,500        16/05/2001
TI GROUP 1990 EXECUTIVE SHARE OPTION SCHEME                                              238,000        21/05/2001
                                                                             AND         190,000        18/01/2006
                                                                             AND         190,000        20/03/2006
TI GROUP 1999 EXECUTIVE SHARE OPTION SCHEME                                              244,000        22/05/2001
                                                                             AND         238,000        31/05/2001
                                                                             AND         610,000        05/04/2002
                                                                             AND         600,000        17/04/2002
                                                                             AND         273,224        11/07/2003
                                                                             AND         283,889        13/08/2003
                                                                             AND         284,697        11/11/2003
                                                                             AND         300,300        02/12/2003
                                                                             AND         301,204        09/12/2003
                                                                             AND         225,000        19/01/2005
                                                                             AND         225,000        21/01/2005
                                                                             AND         220,000        25/04/2005
                                                                             AND         190,000        26/01/2006
TI GROUP 1981 SAVINGS RELATED SHARE OPTION SCHEME                                        241,500        24/05/2001
TI GROUP 1994 SAVINGS RELATED SHARE OPTION SCHEME                                        242,700        23/05/2001
                                                                             AND         296,956        01/10/2003
                                                                             AND         200,000        12/10/2005
                                                                             AND         200,000        20/10/2005

9.       Total number of securities in issue at the end of the period:
565,790,471 ordinary shares

Contact for queries:

10.     Name: Neil Burdett
11.     Address: Smiths Group plc, 765 Finchley Road, London NW11 8DS
12.     Telephone: [phone]


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