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                                    
                                                                               
     143,483        BANK OF NEW YORK BRUSSELS       FPM                        
     16,100         BANK OF NEW YORK EUROPE LDN     FIL                        
     587,320        BNP PARIBAS, PARIS              FIGEST                     
     8,000          BNP PARIBAS, PARIS (C)          FIL                        
     6,604,716      Brown Bros Harrimn Ltd Lux      FIL                        
     67,373         Brown Bros Harriman and Co      FIJ                        
     10,800         Chase Manhttn BK AG FRNKFRT (S) FPM                        
     438,934        JP MORGAN, BOURNEMOUTH          FIL                        
     1,456,064      JP MORGAN, BOURNEMOUTH          FISL                       
     37,093         JP MORGAN, BOURNEMOUTH          FPM                        
     8,600          NORDDEUTSCHE LANDERSBANK        FIL                        
     66,200         NORTHERN TRUST LONDON           FIL                        
     375,637        NORTHERN TRUST LONDON           FPM                        
     25,500         STATE STR BK AND TR CO LNDN (S) FIL                        
     53,000         STATE STREET HONG KONG          FIA(K)L                    
     80,429         KAS BANK NV (S)                 FIL                        
     92,317         Brown Bros Harrimn Ltd Lux (C)  FIL                        
     405,047        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):                                                    
                                                                               
     12 January 2011                                                           
                                                                               
6    Date on which issuer notified:                                            
                                                                               
     14 January 2011                                                           
                                                                               
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: 10,673,815                                              
                                                                               
     Number of voting rights: 10,673,815                                       
                                                                               
     Resulting situation after the triggering transaction:                     
                                                                               
     Number of shares (indirect): 10,735,815                                   
                                                                               
     Number of voting rights (direct):                                         
                                                                               
     Number of voting rights (indirect): 10,735,815                            
                                                                               
     % of voting rights (direct):                                              
                                                                               
     % of voting rights (indirect): 5.00                                       
                                                                               
     Total voting rights: 10,735,815 (5.00%)                                   
                                                                               
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:                  
                                                                               
     62,000                                                                    
                                                                               
12   Date on which proxy holder will cease to hold voting rights:              
                                                                               
     12 January 2011                                                           
                                                                               
13   Additional Information                                                    
                                                                               
     None                                                                      
                                                                               
14   Contact Name:                                                             
                                                                               
     Angela Purtill, Deputy Company Secretary, Johnson Matthey plc             
                                                                               
     Contact Telephone Number:                                               
     020 7269 8461