Blocklisting Interim Review

Radstone Technology PLC
19 December 2006

                        BLOCK LISTING SIX MONTHLY RETURN



To:      Listing Applications
         UK Listing Authority
         Financial Services Authority
         25 The North Colonnade
         Canary Wharf
         London, E14 5HS



Date:   19 December 2006


Name of applicant:                                        RADSTONE TECHNOLOGY PLC

Name of scheme:                                           (1) Radstone Technology PLC 
                                                              Senior Executive Share Option Scheme

                                                          (2) Radstone Technology PLC 
                                                              Senior Executive Unapproved Share Option Scheme

Period of return:                          From:          01.06.2006            To:       30.11.2006

Balance under scheme from previous return:                (1) 378,930
                                                          (2) 1,000,000

The amount by which the block scheme has been increased,  (1) Nil
if the scheme has been increased since the date of the    (2) Nil
last return:                                              

Number of securities issued/allotted under scheme during  (1) Nil
period:                                                   (2) Nil

Balance under scheme not yet issued/allotted at end of    (1) 378,930
period                                                    (2) 1,000,000

Number and class of securities originally listed and the  Ordinary Shares of 12.5p each
date of admission                                         (1) 400,000 on 22.11.2000 & 512,730 on 12.12.2003
                                                          (2) 1,000,000 on 12.12.2003

Total number of securities in issue at the end of the     30,339,640 Ordinary Shares of 12.5p each
period


Name of contact:                                          Mr. N. Novakovic

Address of contact:                                       Radstone Technology PLC, Tove Valley Business Park, Towcester,
                                                          Northants, NN12 6PF

Telephone number of contact:                              01327 322840



SIGNED BY   _________________________________________________

Director/company secretary/suitably experienced employee/duly authorised
officer, for and on behalf of

_____________________________________

Name of applicant



If you knowingly or recklessly give false or misleading information you may be
liable to prosecution.


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