Holding(s) in Company

SOFTWARE RADIO TECHNOLOGY PLC ("SRT" or the "Company")             

                              HOLDING IN COMPANY                               

On 5 April 2007, SRT was notified by HSBC Security Services (UK) Limited that
Polar Capital Partners is the beneficial owner of 6,263,180 shares in the
Company representing 7.331 per cent. of the issued share capital.

The shares are registered as follows:

Registered holder                            No. of shares            Account
                                                                             
Chase Nominees Limited                           2,980,281         POLTEC01IT
                                                                             
Goldman Sachs Intl Nominees                      1,948,078         POLTEC04OS
                                                                             
Northern Trust Nominees Limited                  1,334,821         POLTEC05OS

Enquiries:

Software Radio Technology plc                                      01761 409500
                                                                               
Matthew Rogers                                   [e-mail]
                                                                               
Hanson Westhouse Limited                                          0113 246 2610
                                                                               
Tim Feather/Matthew Johnson                     [e-mail]