Holding(s) in Company

NOTIFICATION OF MAJOR INTERESTS IN SHARES

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:            
                                                                               
     FIL Limited                                                               
                                                                               
4    Full name of shareholder(s) (if different from 3.):                       
                                                                               
     FIL Limited (FIL) is the parent holding company for various direct and    
     indirect subsidiaries, including FIL Fund Management Limited (FFML), FIL  
     Investment Services Ltd (FISL), FIL Gestion (FIGEST), FIL Asset Management
     (Korea) Limited (FIAKL), FIL Investments Management (Hong Kong) Limited   
     (FIMHK), FIL Pension Management (FPM), Fidelity Investments Japan (FIJ)   
     and FIL Investments International (FII), investment managers for various  
     non-US investment companies and institutional clients.                    
                                                                               
     SHARES HELD   NOMINEE                         MANAGEMENT COMPANY                                    
                                                                               
     145,583       BANK OF NEW YORK BRUSSELS       FPM                         
     16,100        BANK OF NEW YORK EUROPE LDN     FIL                         
     592,170       BNP PARIBAS, PARIS              FIGEST                      
     7,800         BNP PARIBAS, PARIS (C)          FIL                         
     6,606,265     Brown Bros Harrimn Ltd Lux      FIL                         
     67,373        Brown Bros Harriman and Co      FIJ                        
     10,800        Chase Manhttn BK AG FRNKFRT(S)  FPM                         
     447,934       JP MORGAN, BOURNEMOUTH          FIL                        
     1,427,064     JP MORGAN, BOURNEMOUTH          FISL                        
     38,793        JP MORGAN, BOURNEMOUTH          FPM                         
     8,600         NORDDEUTSCHE LANDERSBANK        FIL                        
     66,200        NORTHERN TRUST LONDON           FIL                         
     374,287       NORTHERN TRUST LONDON           FPM                         
     25,500        STATE STR BK AND TR CO LNDN(S)  FIL                         
     53,000        STATE STREET HONG KONG          FIA(K)L                      
     77,949        KAS BANK NV (S)                 FIL                         
     89,269        Brown Bros Harrimn Ltd Lux (C)  FIL                         
     393,076       JP MORGAN, BOURNEMOUTH (C)      FIL                         
     98,000        MASTER TRUST BANK OF JAPAN (C)  FIJ                         
     9,700         STATE STR BK AND TR CO LNDN (C) FIL                         
     19,100        CITIBANK NA, HONG KONG BR (S)   FIL                         
     16,300        MELLON BANK NA (S)              FIL                         
     56,400        BANK OF IRELAND (S)             FIL                         
     59,700        JP MORGAN, BOURNEMOUTH (C)      FIL                                     
                                                                               
5    Date of the transaction (and date on which the threshold is crossed or    
     reached if different):                                                    
                                                                               
     16 November 2010                                                          
                                                                               
6    Date on which issuer notified:                                            
                                                                               
     18 November 2010                                                          
                                                                               
7    Threshold(s) that is/are crossed or reached:                              
                                                                               
     5%                                                                        
                                                                               
8    Notified details:                                                         
                                                                               
     VOTING RIGHTS ATTACHED TO SHARES:                                         
                                                                               
     Class/type of shares (if possible using the ISIN CODE):                   
                                                                               
     GB0004764071                                                              
                                                                               
     Situation previous to the triggering transaction:                         
                                                                               
     Number of shares: 10,762,463                                              
                                                                               
     Number of voting rights: 10,762,463                                       
                                                                               
     Resulting situation after the triggering transaction:                     
                                                                               
     Number of shares (direct): 10,706,963                                     
                                                                               
     Number of voting rights (direct):                                         
                                                                               
     Number of voting rights (indirect): 10,706,963                            
                                                                               
     % of voting rights (direct):                                              
                                                                               
     % of voting rights (indirect): 4.98                                       
                                                                               
     Total voting rights: 10,706,363 (4.98%)                                   
                                                                               
9    Chain of controlled undertakings through which the voting rights and/or   
     the financial instruments are effectively held if applicable:             
                                                                               
     See 4 above.                                                              
                                                                               
     PROXY VOTING:                                                             
                                                                               
10   Name of the proxy holder:                                                 
                                                                               
     FIL Limited                                                               
                                                                               
11   Number of voting rights proxy holder will cease to hold:                  
                                                                               
     55,500                                                                    
                                                                               
12   Date on which proxy holder will cease to hold voting rights:              
                                                                               
     16 November 2010                                                          
                                                                               
13   Additional Information                                                    
                                                                               
     None                                                                      
                                                                               
14   Contact Name:                                                             
     Angela Purtill, Deputy Company Secretary, Johnson Matthey plc             
     Contact Telephone Number:020 7269 8461