Holding(s) in Company

11 Nov 2010 16:30

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the underlying issuer Software Radioof existing shares to which voting rights are Technology plcattached:ii 2 Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights X

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments An event changing the breakdown of voting rights Other (please specify): 3. Full name of person(s) subject to the Jonathan Hornenotification obligation:iii 4. Full name of shareholder(s) Pershing Nominees (if different from 3.):iv 5. Date of the transaction and date on which the threshold is crossed or 11 November 2010reached: v 6. Date on which issuer notified: 11 November 2010 7. Threshold(s) that is/are crossed or 12%, 11%reached: vi, vii 8. Notified details: A: Voting rights attached to shares viii, ix Class/ Situation previous Resulting situation after the triggering transaction type of to the triggering shares transaction if Number Number Number Number of voting % of voting rights x possible of of of shares rights using Shares Voting the ISIN Rights CODE Indirect Direct Direct xi xii Direct Indirect Ordinary 12,546,400 12,546,400 10,746,400 10,746,400 10.3% 0.1p B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ Number of voting % of voting financial date xiii Conversion Period xiv rights that may be rights instrument acquired if the instrument is exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi Resulting situation after the triggering transaction Type of Exercise price Expiration Exercise/ Number of voting rights % of voting rights financial date xvii Conversion instrument refers to xix, xx instrument period xviii Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 10,746,400 10.3%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: xxi

Proxy Voting: 10. Name of the proxy holder: 11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: 13. Additional information: Percentage of voting rights based on the issued share capital of the company as enlarged by the placing announced today which is scheduled to complete on 16 November 2010 14. Contact name:

15. Contact telephone number: