Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: Software Radio Technology plc 2. Reason for the notification: An acquisition or disposal of voting rights 3. Full name of person(s) subject to the notification obligation: Polar Capital LLP 4. Full name of shareholder(s) (if different from 3): N/A 5. Date of the transaction (and date on which the threshold is crossed or reached if different): 30 January 2008 6. Date on which issuer notified: 30 January 2008 7. Threshold(s) that is/are crossed or reached: 4% 8. Notified details: A: Voting rights attached to shares Class/type Situation of previous to Resulting Situation after the triggering of shares if the Triggering transaction transaction possible using ISIN Number of Number of voting Number of Number of % of voting code shares rights shares voting rights rights Direct Indirect Direct Indirect GB00B0M8KM36 6,652,466 3,771,811 3.856% B: Financial Instruments Resulting Situation after the triggering transaction Type of Expiration Exercise / Number of Voting rights that may % of Financial Date Conversion be acquired if the instrument is voting Instrument Period /Date exercised / converted rights Total (A + B) Number of Voting Rights % of voting rights 3,771,811 3.856% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable Proxy Voting: 10. Name of the proxy holder: N/A 11. Number of voting rights proxy holder will cease to hold: N/A 12. Date on which proxy holder will cease to hold voting rights: N/A 13. Additional information: N/A 14. Contact name: Polar Capital LLP - Operations Department 15. Contact telephone number: +44 (0)20 7227 2700 Software Radio Technology plc 01761 409500 Simon Tucker Managing Director Hanson Westhouse Limited 0113 246 2610 Tim Feather / Matthew Johnson
UK 100

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