Director/PDMR Shareholding

Smiths Group PLC
14 December 2005

14 DECEMBER 2005



NOTIFICATION OF TRANSACTION OF DIRECTORS, PERSONS DISCHARGING MANAGERIAL
RESPONSIBILITY OR CONNECTED PERSONS



1.  Name of the issuer: SMITHS GROUP PLC

2.  State whether the notification relates to (i) a transaction notified in
accordance with DR 3.1.4R(1)(a); or (ii) DR 3.1.4(R)(1)(b) a disclosure made in
accordance with section 324 (as extended by section 328) of the Companies Act
1985; or (iii) both (i) and (ii):  INTERESTS OF DIRECTOR

3.  Name of person discharging managerial responsibilities/director:

ALAN MATTHEW THOMSON

4.  State whether notification relates to a person connected with a person
discharging managerial responsibilities/director named in 3 and identify the
connected person:        NO

5.  Indicate whether the notification is in respect of a holding of the
person referred to in 3 or 4 above or in respect of a nonbeneficial interest:

HOLDING OF THE DIRECTOR NAMED IN 3 ABOVE

6.  Description of shares (including class), debentures or derivatives or
financial instruments relating to shares: ORDINARY SHARES OF 25p

7.  Name of registered shareholders(s) and, if more than one, the number of
shares held by each of them:

ALAN MATTHEW THOMSON

8   State the nature of the transaction:

i)  EXERCISE OF OPTION UNDER THE SMITHS INDUSTRIES 1995 
    EXECUTIVE SHARE OPTION SCHEME BY DIRECTOR

ii) MARKET SALE OF SHARES BY DIRECTOR

9.  Number of shares, debentures or financial instruments relating to
shares acquired:

EXERCISE OF OPTION OVER 20,569 SHARES

10. Percentage of issued class acquired (treasury shares of that class
should not be taken into account when calculating percentage):

    0.004%

11. Number of shares, debentures or financial instruments relating to shares
disposed:

MARKET SALE OF 20,569 SHARES BY DIRECTOR

12. Percentage of issued class disposed (treasury shares of that class
should not be taken into account when calculating percentage):

    0.004%

13. Price per share or value of transaction:

i)   632p PER SHARE OPTION EXERCISE PRICE

ii)  990.9247p PER SHARE FOR MARKET SALE

14. Date and place of transaction:  14 DECEMBER 2005 LONDON

15. Total holding following notification and total percentage holding
following notification (any treasury shares should not be taken into account
when calculating percentage):

    131,899 SHARES = 0.023%

16.  Date issuer informed of transaction  14 DECEMBER 2005

If a person discharging managerial responsibilities has been granted options by
the issuer complete the following boxes

17.  Date of grant: N/A

18.  Period during which or date on which it can be exercised:

19.  Total amount paid (if any) for grant of the option:

20.  Description of shares or debentures involved (class and number):

21.  Exercise price (if fixed at time of grant) or indication that price is
to be fixed at the time of exercise:

22.  Total number of shares or debentures over which options held following
notification:

23.  Any additional information:

24.  Name of contact and telephone number for queries: GUY NORRIS - 
020 8457 8326



Name of duly authorised officer of issuer responsible for making notification:
GUY NORRIS

Date of notification  14 DECEMBER 2005






                      This information is provided by RNS
            The company news service from the London Stock Exchange