Holding(s) in Company

TR-1(i): Notification of major interests in shares

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 state Yes/No): ( )

An acquisition or disposal of voting rights (Yes)

An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached ( )

An event changing the breakdown of voting rights ( )

Other (please specify): Decrease in issued share capital/Transitional
Provisions (Yes)

3. Full name of person(s) subject to the notification obligation (iii):

OppenheimerFunds, Inc. (OFI)

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

reached (v): 25/11/2008

6. Date on which issuer notified: 26/11/2008

7. Threshold(s) that is/are crossed or reached:

4% (OFI 4.04%)

8. Notified details: Tullett Prebon plc, Cable House, 54-62 New Broad Street,  
London EC2M 1ST, United Kingdom. www.tullib.com                                

A: Voting rights attached to shares

Class/type of shares

if possible using the ISIN CODE Situation previous to the Triggering transaction (vi)

             Number of Shares      Number of Voting Rights(viii)

GB00B1H0DZ51 6,510,947             6,510,947

Class/type of shares

if possible using the ISIN CODE Resulting situation after the triggering
transaction(vii)

               Number of   Number of voting rights % of voting r    
               Shares      (ix)                    ights            
                                                                    
               Direct      Direct (x) Indirect     Direct Indirect  
                                      (xi)                          
                                                                    
GB00B1H0DZ51   8,691,628              8,691,628           4.04%     

B: Financial Instruments                                                       
                                                                               
Resulting situation after the triggering transaction (xii)                     
                                                                               
Type of          Expiration Exercise/           Number of voting   % of voting 
financial        date       Conversion Period/  rights that may be rights      
instrument       (xiii)     Date (xiv)          acquired if the                
                                                instrument is                  
                                                exercised/                     
                                                converted.                     
                                                                               
Total (A+B)                                                                    
                                                                               
Number of voting rights          % of voting rights                            
                                                                               
8,691,628                        4.04%                                         

9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable (xv):

As of 11/25/08, OFI held 4.04% of Tullett Prebon PLC (Issuer) based on
8,691,628 shares held and outstanding shares of 215,313,584.

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: Rosemary Baker, Massachusetts Mutual Life Insurance Company

15. Contact telephone number: 00 1 413 744 8258