Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                             
                                                                                            
                                                                                            
                                                                                            
1. Identity of the issuer or the underlying issuer                Software Radio Technology 
of existing shares to which voting rights are                                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                              BlackRock, Inc.       
notification obligation:iii                                                                 
                                                                                            
4. Full name of shareholder(s)                                                              
 (if different from 3.):iv                                                                  
                                                                                            
5. Date of the transaction and date on                                                      
which the threshold is crossed or                                     13th April 2012       
reached:v                                                                                   
                                                                                            
6. Date on which issuer notified:                                     16th April 2012       
                                                                                            
7. Threshold(s) that is/are crossed or                           Holding has gone above 8%  
reached: vi, vii                                                                            
                                                                                            

 

8. Notified details:                                                                    
                                                                                        
A: Voting rights attached to shares viii, ix                                            
                                                                                        
Class/type of  Situation previous Resulting situation after the triggering transaction  
shares         to the triggering                                                        
               transaction                                                              
                                                                                        
if possible    Number Number      Number    Number of voting       % of  voting rights x
using          of     of          of shares rights                                      
the ISIN CODE  Shares Voting                                                            
                      Rights      Direct    Direct xi Indirect xii Direct    Indirect   
                                                                                        
GB00B0M8KM36   N/A    N/A         N/A       N/A       8,839,140    N/A       8.32%      
                                                                                        

 

B: Qualifying Financial Instruments                                                     
                                                                                        
Resulting situation after the triggering transaction                                    
                                                                                        
Type of financial  Expiration Exercise/              Number of voting       % of voting 
instrument         date xiii  Conversion Period xiv  rights that may be     rights      
                                                     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 Expiration   Exercise/     Number of voting rights   % of voting    
financial  price    date xvii    Conversion    instrument refers to      rights xix, xx 
instrument                       period xviii                                           
                                                                                        
                                                                                        
                                                                         Nominal   Delta
                                                                                        
                                                                                        
                                                                                        

 

Total (A+B+C)                                                                           
                                                                                        
Number of voting rights                  Percentage of voting rights                    
                                                                                        
8,839,140                                8.32%                                          
                                                                                        

 

9. Chain of controlled undertakings through which the voting rights and/or the          
financial instruments are effectively held, if applicable: xxi                          
                                                                                        
                                                                                        
                                                                                        
BlackRock Investment Management (UK) Limited - 8,839,140 (8.32%)                        
                                                                                        
                                                                                        
                                                                                        

 

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:                                                                          
                                                                                        

 

                                         BlackRock Threshold Reporting Team             
13. Additional information:                                                             
                                                                                        
14. Contact name:                        Andrew Manchester                              
                                                                                        
15. Contact telephone number:            020 7743 5773                                  
                                                                                        

 

 

Enquiries:
 
Software Radio Technology plc   01761 409500  
Simon Tucker / Richard Hurd                   
                                              
                                              
WesthouseSecurities Limited     020 7601 6100 
Richard Baty / Petre Norton