Holding(s) in Company

Radstone Technology PLC
15 June 2005

The company has received the following notification:




                          AVIVA plc
                          P O Box 89
                          Surrey Street
                          Norwich
                          NR1 3DR
                          Direct Line: 01603 843362


                          15 June 2005



The Company Secretary
Radstone Technology plc
Tove Valley Business Park
Towcester
Northamptonshire
NN12 6JN



Dear Sir



RADSTONE TECHNOLOGY PLC (THE "COMPANY") - SEDOL 0720483



This notification supersedes our previous notification to you dated 20 April
2005 and is prompted by purchases totalling 252,792 on 14 June 2005.



This notification relates to issued ordinary shares of GBP0.125 each in the
capital of the Company (the "shares") and is given in fulfilment of the
obligations imposed by sections 198 to 202 of the Companies Act 1985 (the "Act
").



1.            Notification on behalf of Morley Fund Management Limited (a
subsidiary of Aviva plc)



1.1    We hereby notify you on behalf of Morley Fund Management Limited that
immediately after the time when the obligation to make this notification arose
Morley Fund Management Limited were interested in 2,350,872 shares.



1.2    The identity of the registered holders of the shares to which this
notification relates and the number of shares held by each of them are set out
in the attached Appendix: Morley Fund Management Limited.



2.      Notification on behalf of Aviva plc.



2.1    We hereby notify you on behalf of Aviva plc that immediately after the
time when the obligation to make this notification arose Aviva plc were
interested in 2,350,872 shares giving the Aviva group a total percentage
interest in the shares of 7.76%



2.2    The identity of the registered holders of the shares to which this
notification relates and the number of shares held by each of them are set out
in the attached Appendix: Aviva plc.



If you require further information as to which companies in the Aviva group hold
interests in the shares (by virtue of s.203 of the Act) please submit a written
request and we will be happy to supply this information.



We are only required to notify interests which are defined as material interest
when the holding is equal to 3% or more of the Company's relevant share capital.
  The term material interests exclude certain categories where we do not hold a
beneficial interest, for example where the shares are held in an Authorised Unit
Trust Scheme or Open Ended Investment Company.  Holdings in those categories are
therefore not included in the holding notified under this letter.  If you wish
us to confirm the level of holdings in these categories, please let us know.





Yours faithfully







Margaret Watts

For and on behalf of

Aviva plc












The Company Secretary                          15 June 2005

Radstone Technology plc









Appendix: Morley Fund Management Limited





Registered Holders                                Number of Shares held



BNY Norwich Union Nominees Ltd                    351,311 (Material)



Chase GA Group Nominees Ltd                       1,418,841 (Material)



Chase Nominees Ltd                                110,519 (Material)



CUIM Nominee Ltd                                  470,201 (Material)



Total percentage interest of Morley Fund Management Limited: 7.76%



Issued share capital on which this notification based: 30,299,640






The Company Secretary                15 June 2005

Radstone Technology plc









Appendix: AVIVA PLC





Registered Holders                                Number of Shares held



BNY Norwich Union Nominees Ltd                    351,311 (Material)



Chase GA Group Nominees Ltd                       1,418,841 (Material)



Chase Nominees Ltd                                110,519 (Material)



CUIM Nominee Ltd                                  470,201 (Material)







Total percentage interest of Morley Fund Management Limited: 7.76%



Issued share capital on which this notification based: 30,299,640






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