Preliminary Results for the year ended 31 March 2006

“Record level of product introductions” Radstone Technology, the world’s leading independent supplier of high-performance, embedded computer products for defence and aerospace applications today announces preliminary results for the year ended 31 March 2006. Key Points • Order book ended the year up 9% at £94.1m (2005 : £86.5m) • Turnover up 10% to £54.9m (2005: £49.9m). • An exceptionally active period for product development with 21 new product introductions. Spending on development in the year amounted to £7.7m (2005: £6.1m) representing 13.9% (2005: 12.2%) of revenue. • Final dividend of 3.15p per ordinary share increasing the total dividend by 17% to 4.2p (2005: 3.6p). • Adjusted Profit before tax of £5.6m (2005: £8.1m), • Basic earnings per share were 10.91p (2005: 27.97p).  Adjusted earnings per share (see note 5) were 14.68p compared to 20.56p last year. • Acquisition of the assets of Sonoran Microsystems Inc. through DaqScribe Technology which further enhances the mechanical test and measurement product portfolio. Jeff Perrin, Chief Executive, commenting on the results said: “This has been an exceptionally busy period for Radstone.  We have ended the financial year with a strong order book and have spent significant time and resource on our product development.  Our efforts ensure we remain at the forefront of the military embedded computing market and we are confident that this will continue to provide a solid base for Radstone’s future growth and strategic development.”