Announcement Released in Error

SOFTWARE RADIO TECHNOLOGY PLC ("SRT" or the "Company") Announcement Released in Error SRT advises that the announcement released today at 14.59 was issued in error by the Company's regulatory information service and is a copy of the announcement released on 19 May 2011. Enquiries Software Radio Technology plc +44 (0)1761 409500 Simon Tucker simon.tucker@softwarerad.com Chief Executive Officer Westhouse Securities Limited +44 (0)20 7601 6100 Tim Feather Matthew Johnson