Holding(s) in Company

NOTIFICATION OF MAJOR INTERESTS IN SHARES

Number of voting rights proxy holder will cease to hold:

1   Identity of the issuer or the underlying issuer of existing shares to     
    which voting rights are attached:                                         
                                                                              
    Johnson Matthey plc                                                       
                                                                              
2   Reason for the notification:                                              
                                                                              
    An acquisition or disposal of voting rights                               
                                                                              
3   Full name of person(s) subject to the notification obligation:            
                                                                              
    Legal & General Group Plc (L&G)                                           
                                                                              
4   Full name of shareholder(s) (if different from 3.):                       
                                                                              
    Legal & General Assurance (Pensions Management) Limited (PMC)             
                                                                              
5   Date of the transaction (and date on which the threshold is crossed or    
    reached if different):                                                    
                                                                              
    30 September 2009                                                         
                                                                              
6   Date on which issuer notified:                                            
                                                                              
    1 October 2009                                                            
                                                                              
7   Threshold(s) that is/are crossed or reached:                              
                                                                              
    From 4% - 3% (L&G)                                                        
                                                                              
8   Notified details:                                                         
                                                                              
    VOTING RIGHTS ATTACHED TO SHARES:                                         
                                                                              
    Class/type of shares (if possible using the ISIN CODE):                   
                                                                              
    ORD GBP 1                                                                 
                                                                              
    Situation previous to the triggering transaction:                         
                                                                              
    Number of shares: 8,869,492                                               
                                                                              
    Number of voting rights: 8,869,492                                        
                                                                              
    Resulting situation after the triggering transaction:                     
                                                                              
    Number of shares (direct): 8,515,661                                      
                                                                              
    Number of voting rights (direct): 8,515,661                               
                                                                              
    Number of voting rights (indirect):                                       
                                                                              
    % of voting rights (direct): 3.96%                                        
                                                                              
    % of voting rights (indirect):                                            
                                                                              
    Total voting rights: 8,515,661 (3.96%)                                    
                                                                              
9   Chain of controlled undertakings through which the voting rights and/or   
    the financial instruments are effectively held if applicable:             
                                                                              
    Legal & General Group Plc (Direct and Indirect) (Group)                   
                                                                              
    Legal & General Investment Management (Holdings) Limited (LGIMH) (Direct and Indirect) 
                                                                              
    Legal & General Investment Management Limited (Indirect) (LGIM)           
                                                                              
                Legal & General Group Plc (Direct) (L&G) (8,515,661 - 3.96% = LGAS, LGPL & PMC)        

    Legal & General Investment Management (Holdings)      Legal & General Insurance Holdings Limited (Direct) (LGIH)
    Limited (Direct)(LGIMHD) (7,748,808 - 3.60% = PMC)                                        
                                                      
    Legal & General Assurance (Pensions Management)       Legal & General Assurance Society Limited (LGAS & LGPL)
    Limited (PMC) (7,748,808  - 3.60% = PMC)
                                                
                                                          Legal & General Pensions Limited (Direct) (LGPL)
                                                                              
    PROXY VOTING:                                                             
                                                                              
10  Name of the proxy holder:                                                 
                                                                              
    N/A                                                                       
                                                                              
11  Number of voting rights proxy holder will cease to hold:

    N/A


12  Date on which proxy holder will cease to hold voting rights:            
                                                                              
    N/A                                                                     
                                                                              
13  Additional Information:                                                 
                                                                              
    Notification using the total voting rights figure of 214,675,736        
                                                                              
14  Contact Name:                                                           
                                                                              
    Angela Purtill, Deputy Company Secretary, Johnson Matthey plc             
    Contact Telephone Number: 020 7269 8461