Director/PDMR Shareholding

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 DTR 3.1.2 R, (ii) a disclosure made in accordance 
          with LR 9.8.6R(1) or (iii) a disclosure made in accordance with      
          section 793 of the Companies Act (2006):                             
                                                                               
          In accordance with DTR 3.1.2R                                        
                                                                               
3.        Name of person discharging managerial responsibilities/director:     
                                                                               
          L C Pentz                                                            
          N P H Garner                                                         
                                                                               
4.        State whether notification relates to a person connected with a      
          person discharging managerial responsibilities/director named in 3   
          and identify the connected person:                                   
                                                                               
          Notification relates to directors named in 3                         
                                                                               
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:                                                            
                                                                               
          Notification is in respect of holdings of the 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:                                      
                                                                               
          L C Pentz                                                            
          N P H Garner                                                         
                                                                               
8.        State the nature of the transaction:                                 
                                                                               
          Exercise of executive share options and subsequent retention/disposal
          of shares. Details are as follows:                                   

                       Ordinary Shares   Date of       Exercise  Number      Sale Price
                       under option      Grant         Price (£) Disposed    (£)       
                                                                             
          L C Pentz      8,224           19/07/2000    9.42      8,224       15.00     
          N P H Garner   6,286           20/07/2005    10.70     6,286       15.00    
          N P H Garner   1,572           20/07/2005    10.70     1,572       15.001    
          N P H Garner   1,572           20/07/2005    10.70     1,572       15.0022   
          N P H Garner   5,503           26/07/2006    12.82     5,503       15.00    
          N P H Garner   1,376           26/07/2006    12.82     1,376       15.00     

9.         Number of shares, debentures or financial instruments relating to   
           shares acquired:                                                    
                                                                               
           See 8 above                                                         
                                                                               
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:                                                    
                                                                               
           See 8 above                                                         
                                                                               
12.        Percentage of issued class disposed (treasury shares of that class  
           should not be taken into account when calculating percentage):      
                                                                               
           Less than 0.1%                                                      
                                                                               
13.        Price per share or value of transaction:                            
                                                                               
           See 8 above                                                         
                                                                               
14.        Date and place of transaction:                                      
                                                                               
           1 December 2009, 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 - 24,820 ordinary shares of £1 each                       
                                                                               
16.        Date issuer informed of transaction:                                
                                                                               
           2 December 2009                                                     
                                                                               

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

Angela Purtill
Deputy Company Secretary
Date of Notification
2 December 2009