Holding(s) in Company

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

                              HOLDING IN COMPANY                               

On 11 December 2006, SRT was notified by HSBC Security Services that Polar
Capital Partners is the beneficial owner of 3,868,895 shares in the Company
representing 4.955 per cent. of the issued share capital.

The shares are registered as follows:

Registered holder                            No. of shares            Account
                                                                             
Chase Nominees Limited                           2,460,638         POLTEC01IT
                                                                             
Goldman Sachs Intl Nominees                        708,257         POLTEC04OS
                                                                             
Nortrust Nominees Limited                          700,000         POLTEC05OS

Enquiries:

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