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: ( )

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

Aviva plc & its subsidiaries

4. Full name of shareholder(s) (if different from 3.) (iv):        

Registered Holder:

BNY Norwich Union Nominees Limited (4,292,831)*
Chase GA Group Nominees Limited (10,450,313)*
Chase Nominees Limited (830,818)*
CUIM Nominee Limited (3,089,527)*

*denotes direct interest

Chase Nominees Limited (860,941)
Vidacos Nominees Limited (1,383,991)

5. Date of the transaction and date on which the threshold is crossed or
reached (v): 11 March 2008

6. Date on which issuer notified: 12 March 2008

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

10% to 9% Change at Combined Interest Level.

8. Notified details:                                                         
                                                                             
A: Voting rights attached to shares

Class/type of shares
if possible using the ISIN CODE     Situation previous to the Triggering
                                    transaction (vi)  

GB00B1H0DZ51    Number of Shares      Number of Voting Rights(viii)

                22,201,403            22,201,403

     
Class/type of shares
if possible using the ISIN CODE     Resulting situation after the
                                    triggering transaction(vii)

GB00B1H0DZ51  Number of shares  Number of voting rights (ix)   % of voting rights

              Direct            Direct (x)   Indirect (xi)     Direct  Indirect

              18,663,489        18,663,489   2,244,932         8.76%   1.05%    

B: Financial Instruments                                                          
                                                                                  
Resulting situation after the triggering transaction (xii)                        
                                                                                  
Type of          Expiration  Exercise/           Number of voting     % of voting 
financial        date (xiii) Conversion  Period/ rights that may be   rights      
instrument                   Date (xiv)          acquired if the                  
                                                 instrument is                    
                                                 exercised/                       
                                                 converted.                       
Total (A+B)                                                                    
                                                                               
Number of voting rights                % of voting rights                      
                                                                               
20,908,421                             9.82%                                   
                                                                               
9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable (xv):

See Section 4.

Proxy Voting:

10. Name of the proxy holder:  See Section 4.

11. Number of voting rights proxy holder will cease to hold:  N/A

12. Date on which proxy holder will cease to hold voting rights:  N/A

13. Additional information:       Figures are based on a total number of
                                  voting rights of 212,968,819

14. Contact name:                 Neil Whittaker

15. Contact telephone number:     01603 687803