Holding(s) in Company

Radstone Technology PLC
09 March 2006

The company has received the following announcements:



                                              Gartmore Investment Management Plc
                                                                  Gartmore House
                                                               8 Fenchurch Place
                                                                          London
                                                                        EC3M 4PB
                                                              Tel: [phone]



8 March 2006


The Company Secretary
Radstone Technology Plc
Tove Valley Business Park
Towcester
Northhamptonshire
NN12 6JN



Dear Sir/Madam



RE : RADSTONE TECHNOLOGY PLC



We, Gartmore Investment Limited (GIL), Gartmore Fund Managers Limited (GFM) and
Gartmore Global Partners (GGP), write to advise you pursuant to Section 198 of
the Companies Act 1985 (the "Act") as amended by the Disclosure of Interest in
Shares (amendment) Regulations 1993, that we have decreased our reportable
interest in your company, by virtue of a sale of 125,099 shares on 7th March
2006.



1.      This notification relates to the ordinary GBP0.125 share capital of
Radstone Technology plc



2.      The number of shares of the person(s) with an interest, for the purposes
of Section 208 and 209 of the Act, immediately after the time when the
obligation arose, are shown on the attached schedule.



3.      The identities of the registered holders of these shares and the number
of shares held by each holder, so far as is known at the date of this
notification, are shown on the attached schedule.



4.      The percentages quoted on the attached schedule are based on your issued
share capital of 30,318,640 as advised to us by Exshare.



5.      The total number of shares comprises the aggregated holdings controlled
by GIL, GFM, and GGP, as discretionary investment managers of the clients and
client funds listed on the attached schedule and; accordingly have voting power
in respect of the shares and power to dispose of them.





6.      The shares are held for investment purposes only for the clients and
client funds concerned and we do not know of anyone who is or was party to any
agreement to which Section 204 of the "Act" applies.



Yours faithfully

For and on behalf of Gartmore Investment Management plc



Alan Buddles

Head of Restriction and Disclosures Unit




                        Current Holdings By Fund Manager



Stock Line: 0720483 RADSTONE TECH ORD GBP0.125


Fund Managing Co.      Number of Issued     Percentage   UK Registered Owner                 Fund  Beneficial Owner
                       Shares    Share      of Issued
                       Held      Capital    Capital
Gartmore Fund Managers 8,869                0.029%       Vidacos Nominees Limited A/C        UKINO Gartmore Fund       
Ltd                                                                                                Managers             
                                                                                                   Limited Gartmore U.K.
                                                                                                   Index Trust

Gartmore Fund Managers 1,203,174            3.968%       HSBC Global Custody Nominee UK Ltd  56690 Gartmore Fund        
Ltd                                                                                                managers Ltd         
                                                                                                   A/C Gartmore UK &
                                                                                                   Irish Smaller        
                                                                                                   Companies
                       1,212,043            3.998%

Gartmore Investment    207,625              0.685%       Bank of Bermuda Luxembourg          SICAV3 Gartmore SICAV Pan  
Ltd                                                                                                 Euro Smaller        
                                                                                                    Companies Fund

Gartmore Investment    376,181              1.241%       BNY GIL CLT A/C Noms Ltd A/C LST    LST    Gartmore Smaller
Ltd                                                                                                 Companies Trust Plc

Gartmore Investment    152,517              0.503%       BNY GIL CLT A/C Noms Ltd A/C NWSC   56640  Gartmore Growth
Ltd                                                                                                 Opportunities Plc

Gartmore Investment    692,572              2.284%       Nortrust Nominees Ltd               54550  Strathclyde Pension 
Ltd                                                                                                 Fund


Gartmore Investment    620,311              2.046%       HSBC Global Investor Services       63165  Swiss Federal       
Ltd                                                                                                 Social Security Fund

Gartmore Investment    25,000               0.082%       BNY GIL CLT A/C Noms Ltd A/C GAGIG  GAGIG  Gartmore Absolute   
Ltd                                                                                                 Growth and Income   
                                                                                                    Trust Plc
                                                                                                    (Growth)
                       2,074,206            6.841%

                       3,286,249 30,318,640 10.839%



                                                                   End of Report


















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