Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                         
                                                                                        
                                                                                        
                                                                                        
1. Identity of the issuer or the underlying issuer                        Software Radio
of existing shares to which voting rights are                             Technology plc
attached: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 Horne
notification 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 2010
reached: 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: