Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES                                
                                                                              

 

1. Identity of the issuer or the underlying issuer of existing    Tullett     
shares to which voting rights are attached:                       Prebon plc  
                                                                              

 

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  OppenheimerFunds, Inc (OFI) and     
notification obligation:                  Baring Asset Management Limited     
                                          ("BAM")                             
                                                                              
                                                                              
4. Full name of shareholder(s) (if                                            
different from 3.):                                                           
                                                                              
                                                                              
                                                                              
5. Date of the transaction and date on    20 August 2009                      
which the threshold is crossed or                                             
reached:                                                                      
                                                                              
                                                                              
                                                                              
6. Date on which issuer notified:         21 August 2009                      
                                                                              
                                                                              
                                                                              
7. Threshold(s) that is/are crossed or    4% (OFI decreased to 3.944%)        
reached:                                                                      
                                                                              
                                                                          
                                                                            
8. Notified details:                                                              
                                                                                  
A: Voting rights attached to shares                                               
                                                                                  
                                                                                
                                                                                 
Class/type of   Situation previous  Resulting situation after the triggering      
shares          to the triggering   transaction                                   
                transaction                                                       
                                                                                  
if possible     Number     Number    Number    Number of voting % of  voting rights
using           of         of        of shares rights                              
the ISIN CODE   Shares     Voting                                                  
                           Rights    Direct    Direct Indirect  Direct   Indirect  
                                                                                  
                                                                                 
GB00B1H0DZ51                                                                      
                                                                                
                                                                                 
OFI              8,691,628 8,691,628 8,492,272        8,492,272          3.944%    
                                                                             
                                                                                  
                                                                                  
BAM              NA        NA        163,756          163,756            0.076%    
                                                                               
                                                                                  
B: Qualifying Financial Instruments                                           
                                                                              
Resulting situation after the triggering transaction                          
                                                                              
                                                                              
                                                                            
Type of financial  Expiration  Exercise/   Number of voting       % of voting 
instrument         date        Conversion  rights that may be     rights      
                               Period      acquired if the                    
                                           instrument is                      
                                           exercised/ converted.              
                                                                              
                                                                          
C: Financial Instruments with similar economic effect to Qualifying Financial 
Instruments                                                                   
                                                                              
Resulting situation after the triggering transaction                          
                                                                              
                                                                              
Type of         Exercise Expiration Exercise/  Number of       % of voting    
financial       price    date       Conversion voting          rights         
instrument                          period     rights                         
                                               instrument                     
                                               refers to                      
                                                                              
                                                               Nominal  Delta 
                                                                              
                                                                              

Total (A+B+C)                                                                 
                                                                              
                                                                              
Number of voting rights             Percentage of voting rights               
                                                                              
OFI: 8,492,272                      OFI: 3.944%                               
                                                                              
BAM: 163,756                        BAM: 0.076%                               
                                                                              
Total: 8,656,028                    Total: 4.02%                              
                                                                              

9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable:                    
                                                                              
Massachusetts Mutual Life Insurance Company is the Parent Company of          
OppenheimerFunds, Inc. and Baring Asset Management Limited.                   
                                                                              
                                                                              

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:                                                   
                                                                              
                                                                              
14. Contact name:               Rose Baker                                    
                                                                              
                                Massachusetts Mutual Life Insurance Company   
                                                                              
15. Contact telephone number:   001-413-744-8258