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 section 793 of the Companies Act (2006), or (iii) in accordance
              with paragraph 26 of the Model Code.                                
                                                                                  
              A transaction notified in accordance with DTR 3.1.2R                
                                                                                  
    3.        Name of person discharging managerial responsibilities/director:    
                                                                                  
              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:                                  
                                                                                  
              The notification relates to a connected person, Mrs A-M M Garner    
                                                                                  
    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 in respect of holding of the person named in 4 above   
                                                                                  
    6.        Description of shares (including class), debentures or derivatives  
              or financial instruments relating to shares:                        
                                                                                  
              Ordinary Shares of 104 16/21 pence each                             
                                                                                  
    7.        Name of registered shareholders(s) and, if more than one, the number
              of shares held by each of them:                                     
                                                                                  
              Computershare Trustees Limited                                      
                                                                                  
    8.        State the nature of the transaction:                                
                                                                                  
              Monthly acquisition of shares via the Johnson Matthey Share         
              Incentive Plan                                                      
                                                                                  
    9.        Number of shares, debentures or financial instruments relating to   
              shares acquired:                                                    
                                                                                  
              15                                                                  
                                                                                  
    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:                            
                                                                                  
              £27.4145                                                            
                                                                                  
    14.       Date and place of transaction:                                      
                                                                                  
              19 August 2015, 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):             
                                                                                  
              N/A                                                                 
                                                                                  
    16.       Date issuer informed of transaction:                                
                                                                                  
              21 August 2015                                                      
                                                                                  
    17.       Date of grant:                                                      
                                                                                  
              N/A                                                                 
                                                                                  
    18.       Period during which or date on which it can be exercised:           
                                                                                  
              N/A                                                                 
                                                                                  
    19.       Total amount paid (if any) for grant of the option:                 
                                                                                  
              N/A                                                                 
                                                                                  
    20.       Description of shares or debentures involved (class and number):    
                                                                                  
              N/A                                                                 
                                                                                  
    21.       Exercise price (if fixed at time of grant) or indication that price 
              is to be fixed at the time of exercise:                             
                                                                                  
              N/A                                                                 
                                                                                  
    22.       Total number of shares or debentures over which options held        
              following notification:                                             
                                                                                  
              N/A                                                                 
                                                                                  
    23.       Any additional information:                                         
                                                                                  
              N/A                                                                 
                                                                                  
    24.       Name of contact and telephone for queries                           
                                                                                  
              Angela Purtill, Deputy Company Secretary                            
              020 7269 8400                                                       
                                                                                  
    Name and signature of duly authorised officer of issuer responsible for making
    notification                                                                  
    Angela Purtill                                                                
                                                                                  
    Date of Notification                                                          
    21 August 2015