Director/PDMR Shareholding

SOFTWARE RADIO TECHNOLOGY PLC                         

                             DIRECTOR SHAREHOLDING                             

Software Radio Technology plc ("SRT" or "the Company") was notified on 23 July
2007 that Andrew Lapping, a Non-Executive Director of the Company, had
purchased 10,000 ordinary shares of 0.1p each in SRT at a price of 52p per
share. Following this purchase, Mr. Lapping is interested in 1,091,080 ordinary
shares in the Company, representing 1.23 per cent. of the issued share capital.

Enquiries:

Software Radio Technology plc                                      01761 409500
                                                                               
Matthew Rogers                                   [e-mail]
                                                                               
Hanson Westhouse Limited                                          0113 246 2611
                                                                               
Tim Feather / Matthew Johnson                   [e-mail]