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:            
                                                                               
     Legal & General Group Plc (L&G)                                           
                                                                               
4.   Full name of shareholder(s) (if different from 3.):                       
                                                                               
     Legal & General Assurance (Pension Management) Limited (PMC)              
                                                                               
5.   Date of the transaction (and date on which the threshold is crossed or reached if different):
                                                                               
     17 October 2007                                                           
                                                                               
6.   Date on which issuer notified:                                            
                                                                               
     26 October 2007                                                           
                                                                               
7.   Threshold(s) that is/are crossed or reached:                              
                                                                               
     From 3% - 4% (L&G)                                                        
                                                                               
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: 8,578,908                                               
                                                                               
     Number of voting rights: 8,578,908                                        
                                                                               
     Resulting situation after the triggering transaction:                     
                                                                               
     Number of shares (direct): 8,879,144                                      
                                                                               
     Number of voting rights (direct): 8,879,144                               
                                                                               
     Number of voting rights (indirect): N/A                                   
                                                                               
     % of voting rights (direct): 4.13%                                        
                                                                               
     % of voting rights (indirect): N/A                                        
                                                                               
     Total voting rights: 8,879,144 shares (4.13%)                             
                                                                               
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) (8,879,144 - 4.13% = LGAS, LGPL & PMC)
                                                                               
               Legal & General Investment Management     Legal & General Insurance Holdings      
               (Holdings) Limited (Direct) (LGIMHD)      Limited (Direct) (LGIH)                 
               (7,695,137 - 3.58 % = PMC)                                                     
                                                                               
               Legal & General Assurance (Pensions       Legal & General Assurance Society       
               Management) Limited (PMC)                 Limited (LGAS & LGPL)                   
               (7,695,137 - 3.58 % = PMC)                                                                  
                                                                               
                                                         Legal & General Pensions Limited        
                                                        (Direct) (LGPL)                         

10.  Name of the proxy holder:                                                 
                                                                               
11.  Number of voting rights proxy holder will cease to hold:                  
                                                                               
12.  Date on which proxy holder will cease to hold voting rights:              
                                                                               
13.  Additional Information                                                    
                                                                               
     Notification using the total voting rights figure of 214,675,736          
                                                                               
     Please note this notification has been delayed due to the large number of 
     disclosures required following a substantial amount of new business which 
     has come to us in the form of an in-specie transfer.                      
                                                                               
14.  Contact Name:                                                             
                                                                               
15.  Angela Purtill, Assistant Company Secretary, Johnson Matthey plc          
                                                                               
     Contact Telephone Number:                                               
     020 7269 8461                                                             


29 October 2007