Holding(s) in Company

Smiths Group PLC
30 July 2007



Form TR-1 with annex. FSA Version 2.1 updated April 2007


TR-1: Notifications of Major Interests in Shares




1. Identity of the issuer or the underlying issuer of    Smiths Group plc
existing shares to which voting rights are attached:


2. Reason for notification (yes/no)
                                                         Yes

An acquisition or disposal of voting rights


An acquisition or disposal of financial instruments which may result in the acquisition
of shares already issued to which voting rights are attached


An event changing the breakdown of voting rights


Other (please specify):  Disclosure & Transparency Rules - Transitional Provisions


                                                     Massachusetts Financial Services Company

3. Full name of person(s) subject to notification
obligation:
                                                     MFS invests in securities of the issuer on
                                                     behalf of its various mutual funds and
4. Full name of shareholder(s) (if different from    institutional account clients.
3):
                                                     26-07-07

5. Date of transaction (and date on which the
threshold is crossed or reached if different):
                                                     27-07-07

6. Date on which issuer notified:
                                                     5.17% as of 26 July 2007

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


8: Notified Details                                  Please note that MFS qualifies under DTR 5.1.5 R (d)
                                                     as a US-registered investment manager




A: Voting rights attached to shares


Class/type of     Situation previous to the Resulting situation after the triggering transaction
shares            triggering transaction
                  Number of     Number of   Number of    Number of voting rights  Percentage of voting
If possible use   shares        voting      shares                                rights
ISIN code                       rights

                                                         Direct       Indirect    Direct       Indirect
ORD -
GB00B1WY2338
                  28,736,399    28,736,399                            19,916,901               5.17%






B: Financial Instruments


Resulting situation after the triggering transaction


Type of financial    Expiration date      Exercise/ conversion No. of voting rights that Percentage of
instrument                                period/date          may be acquired (if the   voting rights
                                                               instrument exercised/
                                                               converted)


Total (A+B)


Number of voting rights                              Percentage of voting rights


19,916,901                                           5.17%


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

Smiths Group PLC - B1WY233
Holdings as of 26 July 2007



Entity                                                                     Holding   Percentage Held

MFS Investment Management (MFS)                                          7,549,733               1.96%
MFS Institutional Advisors, Inc. (MFSI)                                  4,611,282               1.20%
MFS International Ltd. (MIL)                                             1,177,273               0.31%
MFS International (U.K.) Limited (MIL U.K.)                              4,515,684               1.17%
MFS International Management K.K. (MIM K.K.)                               123,974               0.03%
MFS Investment Management (Lux) S.A. (MIM Lux)                           1,938,955               0.50%

                                             Notifiable Interest        19,916,901               5.17%

                                              Shares Outstanding       385,388,316




Proxy Voting:


10. Name of proxy holder:                            N/A


11. Number of voting rights proxy holder will cease  N/A
to hold:


12. Date on which proxy holder will cease to hold    N/A
voting rights:




13. Additional information:


14 Contact name:


15. Contact telephone name:






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