Holding(s) in Company

For filings with the FSA include the annex                                              
                                                                                        
For filings with issuer exclude the annex                                               
                                                                                        
                                                                                        
                                                                                        
TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                         
                                                                                        
                                                                                        
1. Identity of the issuer or the underlying issuer                                      
of existing shares to which voting rights are                                           
attached:ii                                                     Tullett 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):                                                                 
                                                                                        
                                                  OppenheimerFunds, Inc ("OFI")         
3. Full name of person(s) subject to the                                                
notification obligation:iii                  Baring Asset Management Limited ("BAM")    
                                                                                        
                                                                                        
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                         10, June 2010                 
reached: v                                                                              
                                                                                        
6. Date on which issuer notified:                         11, June 2010                 
                                                                                        
7. Threshold(s) that is/are crossed or      3% (aggregate position fell below the 4%    
reached: vi, vii                                      threshold to 3.7919%)             
                                                                                        

8. Notified details:                                                                          
                                                                                              
Tullet Prebon Plc, Level 3, 155 Bishopsgate, London EC2M 3TQ                                  
                                                                                              
Nicola Challen, [e-mail]                                                    
Averil Patel, [e-mail]                                                        
                                                                                              
A: Voting rights attached to shares viii, ix                                                  
                                                                                              
Class/type   Situation previous      Resulting situation after the triggering transaction     
of           to the triggering                                                                
shares       transaction                                                                      
                                                                                              
             Number      Number      Number        Number of voting       % of  voting rights 
if possible  of          of          of shares     rights                 x                   
using        Shares      Voting                                                               
the ISIN                 Rights      Direct        Direct   Indirect xii  Direct  Indirect    
CODE                                               xi                                         
                                                                                              
                                                                                              
             8,422,197   8,422,197   7,922,197                                    3.6794%     
             (OFI)       (OFI)       (OFI)                  7,922,197             (OFI)       
                                                            (OFI)                             
                                                                                              
                                                                                              
             242,237     242,237     242,237 (BAM)                                0.1125%     
GB00B1H0DZ51 (BAM)       (BAM)                              242,237 (BAM)         (BAM)       
                                                                                              
                                                                                              
                                     8,164,434                                                
             8,664,434   8,664,434   (Total)                8,164,434             3.7919%     
             (Total)     (Total)                            (Total)               (Total)     
                                                                                              
                                                                                              
                                                                                              
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                       
                                                                                              
7,922,197 (OFI)                             3.6794% (OFI)                                     
                                                                                              
242,237 (BAM)                               0.1125% (BAM)                                     
                                                                                              
8,164,434 (Total)                           3.7919% (Total)                                   
                                                                                              

9. Chain of controlled undertakings through which the voting rights and/or the                
financial instruments are effectively held, if applicable: xxi                                
                                                                                            
The percentage of holdings noted above is based on the total outstanding shares               
of 215,313,584                                                                                
                                                                                              
Massachusetts Mutual Life Insurance Company is the parent company of Baring                   
Asset Management ("BAM") and OppenheimerFunds, Inc. ("OFI").                                  
                                                                                              
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