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