Holding(s) in Company

Radstone Technology PLC
12 April 2005

The company has received the following announcement:


                                                      Citigroup

                                                      Data Control
                                                      1 Calton Square
                                                      2-Floor, Greenside
                                                      Edinburgh
                                                      EH1 3AJ

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Company Secretary
Radstone Technology


12 April 2005


Dear Sir/Madam,


Radstone Technology Ord GBP0.125 shares


In terms of Part VI of the Companies Act 1985 (as amended), I have to inform you
on behalf of Standard Life Investments that on 11/04/05, Standard Life
Investments sold 140,292 shares on behalf of Standard Life Group, this decreased
the total held as a material interest to 1,117,383 shares being 3.688% of the
issued stock of that class.



                     No. of shares held         Registered Name
                         1,117,383              Vidacos Nominees



Yours faithfully
Data Control



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