Holding(s) in Company

Johnson,Matthey PLC
28 June 2004


                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


Name of company                    Johnson Matthey plc

Name of shareholder having         Aviva plc
a major interest

Person with holding                As in 2 above

Name of registered holder          BNY Norwich Union Nominees Ltd   -    799,299
                                   BT Globenet Nominees Ltd         -      7,100
                                   Chase GA Group Nominees Ltd      -  3,856,505
                                   Chase Nominees Ltd               -    477,083
                                   CUIM Nominee Ltd                 -  1,252,900
                                   RBSTB Nominees Ltd               -    275,000

Number of shares/amount of         54,900
stock acquired

Percentage of issued class         0.02%

Number of shares/amount            n/a
of stock disposed

Percentage of issued class         n/a

Class of security                  Ordinary £1 shares

Date of transaction                23 June 2004

Date company informed              28 June 2004

Total holding following this       6,667,887
notification

Total percentage holding           3.02%
of issued class following this
notification

Any additional information

Name of contact and telephone      Lynne Sanderson
number for queries                 0207 269 8461

Name of authorised company         Lynne Sanderson
official responsible for making
this notification

Date of this notification:         28 June 2004




                      This information is provided by RNS
            The company news service from the London Stock Exchange