Holding(s) in Company

Radstone Technology PLC 18 October 2005 The Company has received the following notifications: M&G Investment Management Limited Laurence Pountney Hill London EC4R 0HH 17 October 2005 The Company Secretary Radstone Technology plc Water Lane Towcester Northamptonshire NN12 6JN Fax: 01327 359 662 Dear Sir/Madam Companies Act 1985 (as amended): Disclosures of Interests in Shares In accordance with Part VI of the Companies Act 1985 (as amended) (the "Act"), we write to inform you that Prudential plc and certain of its subsidiary companies have a notifiable interest in the issued share capital of your company as detailed in the attached schedule. For the purposes of S210 of the Act, the address for those companies identified in the attached schedule is Laurence Pountney Hill, London, EC4R 0HH. Yours faithfully Richard Harding For and on behalf of Prudential plc Direct Line: 020 7548 3183 Direct Fax: 020 7548 3268 Notifiable Position Report for RADSTONE TECH. ORD GBP0.125 As at 14 October 2005 Percentage holdings are calculated using an issued share capital of 30,299,640 ORD GBP0.125 shares Registered Holder Holding % Prudential plc 3,688,566 12.17 Total Notifiable Interest BK OF NEW YORK (NOMS) LTD/636922 426,000 CHASE NOMS LTD 19,428 NORTRUST NOMINEE LTD A/C MHFO1 8,482 NORTRUST NOMINEE LTD A/C MKMO1 614,565 NORTRUST NOMS LTD A/C MEL01 375,336 NORTRUST NOMS LTD A/C PUQ01 651,688 PRUCLT HSBC GIS NOM(UK) PAC AC 1,201,240 PRUCLT HSBC GIS NOM(UK) PPL AC 391,827 M&G Group Limited 3,262,566 10.76 CHASE NOMS LTD 19,428 NORTRUST NOMS LTD A/C MHF01 8,482 NORTRUST NOMS LTD A/C MKM01 614,565 NORTRUST NOMS LTD A/C MEL01 375,336 NORTRUST NOMS LTD A/C/ PUQ01 615,688 PRUCLT HSBC GIS NOM(UK) PAC AC 1,201,240 PRUCLT HSBC GIS NOM(UK) PPL AC 391,827 M&G Investment Management Ltd 3,254,084 10.73 CHASE NOMS LTD 19,428 NORTRUST NOMINEES LTD A/C MKM01 614,565 NORTRUST NOMS LTD A/C MEL01 375,336 NORTRUST NOMS LTD A/C/ PUQ01 651,688 PRUCLT HSBC GIS NOM(UK) PAC AC 1,201,240 PRUCLT HSBC GIS NOM(UK) PPL AC 391,827 M&G Limited 3,262,566 10.76 CHASE NOMS LTD 19,428 NORTRUST NOMS LTD A/C MHF01 8,482 NORTRUST NOMS LTD A/C MKM01 614,565 NORTRUST NOMS LTD A/C MEL01 375,336 NORTRUST NOMS LTD A/C/ PUQ01 651,688 PRUCLT HSBC GIS NOM(UK) PAC AC 1,201,240 PRUCLT HSBC GIS NOM(UK) PPL AC 391,827 The Prudential Assurance Company Limited 1,593,067 5.25 PRUCLT HSBC GIS NOM(UK) PAC AC 1,201,240 PRUCLT HSBC GIS NOM(UK) PPL AC 391,827 This information is provided by RNS The company news service from the London Stock Exchange

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