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                   Tullett Prebon 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):                                                                 
                                                                                        
                                                     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                            June 2, 2010               
reached: v                                                                              
                                                                                        
6. Date on which issuer notified:                            June 3, 2010               
                                                                                        
7. Threshold(s) that is/are crossed or         4% (OFI independently decreased below 4%)
reached: vi, vii                                                                        
                                                                                        

8. Notified details:                                                                    
                                                                                        
                                                                                        
                                                                                        
            Tullett 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           
of           to the triggering       transaction                                        
shares       transaction                                                                
                                                                                        
             Number     Number       Number      Number of       % of  voting rights x  
if possible  of         of           of shares   voting                                 
using        Shares     Voting                   rights                                 
the ISIN                Rights                                                          
CODE                                 Direct      Direct Indirect Direct  Indirect       
                                                 xi     xii                             
                                                                                        
                                                                                        
             8,582,305               8,775,797                                          
             (OFI)                   (OFI)                               4.0758% (OFI)  
                                                                                        
                                                                                        
GB00B1H0DZ51                                                                            
             242,237                 242,237                             0.1125% (BAM)  
             (BAM)                   (BAM)                                              
                                                                                        
                                                                                        
                                                                         4.1883% (Total)
             8,824,542               9,018,034                                          
             (Total)                 (Total)                                            
                                                                                        
                                                                                        
                                                                                        
B: Qualifying Financial Instruments