Holding(s) in Company

Radstone Technology PLC
04 January 2006

The Company has received the following notifications:



                                             J O Hambro Capital Management Group

                                                                    Ground Floor

                                                                     Ruder Court

                                                                 14 Ruder Street

                                                                          London

                                                                        SW1Y 6QB

                                                              Tel: [phone]





30 December 2005



N Novakovic ACA

Company Secretary

Radstone Technology plc

Water Lane

Towcester

Northamptonshire

NN12 6JN







Dear Sir



Notification of Substantial Shareholding



We hereby advise you pursuant to Section 198 of the Companies Act 1985, as
amended by Section 134 of the Companies Act 1989, that as at 30 December 2005,
JOHCM OEIC Managers LLP as discretionary investment manager of UCITS is
currently interested in 2,171,127 Ordinary Shares of 12.5p each in Radstone
Technology PLC.



Our records indicate that, based on an issued share capital of 30,299,640
Ordinary Shares of 12.5p each, this figure amounts to 7.17% of the issued share
capital of Radstone Technology PLC.



Please note that the total holding of 2,171,127 shares in which all parties are
interested includes a non-material interest for the purposes of Section 199 2A
Companies Act 1985 of 2,171,127 Ordinary shares in which a JOHCM OEIC Managers
LLP is interested as investment manager of undertakings for collective
investments in transferable securities (UCITS).



Yours faithfully





Rachel Butlin

Company Secretary

Designated members

J O Hambro Capital Management Limited

J O Hambro Capital Management Group Limited


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