Director/PDMR Shareholding

Johnson Matthey PLC
19 August 2005

NOTIFICATION OF TRANSACTIONS OF DIRECTORS/PERSONS DISCHARGING MANAGERIAL
RESPONSIBILITIES AND CONNECTED PERSONS

1.           Name of the issuer:

             Johnson Matthey plc

2.           State whether the notification relates to (i) a transaction 
             notified in accordance with DR 3.1.4(R)(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):

             L  C Pentz - (iii)

             F K Sheffy - (i)

3.           Name of person discharging managerial responsibilities/director:

             L C Pentz

             F K Sheffy

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 
             non-beneficial interest:

             In respect of persons named in 3 above

6.           Description of shares (including class), debentures or derivatives 
             or financial instruments relating to shares:

             Ordinary Shares of £1 each

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

             T Rowe Price Trust as the Trustee of the Johnson Matthey Salaried 
             Employees Savings Investment Plan

8.           State the nature of the transaction:

             Regular purchase of shares by the Trustee of the Johnson Matthey 
             Salaried Employees Savings Investment Plan

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

             L C Pentz       13

             F K Sheffy      22

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

             Less than 0.1%

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

             N/A

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

             N/A

13.          Price per share or value of transaction:

             £11.26

14.          Date and place of transaction:

             15 August 2005, London

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

             L C Pentz       11,323

16.          Date issuer informed of transaction:

             19 August 2005

17.          Date of grant:


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 for queries:

             Angela Purtill, Assistant Company Secretary
             020 7269 8461

Name and signature of duly authorised officer of issuer responsible for making
notification

Angela Purtill

Date of Notification

19 August 2005



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