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 ( )


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):

BNY Norwich Union Nominees Limited (4,772,570)*
Chase GA Group Nominees Limited (12,538,110)*
Chase Nominees Limited (1,010,945)*
CUIM Nominee Limited (3,866,333)*

*denotes direct interest

Chase Nominees Limited (1,797,153)
CUIM Nominee Limited (176,692)
Vidacos Nominees Limited (3,788,786)


5. Date of the transaction and date on which the threshold is crossed or
reached (v): 28 August 2007


6. Date on which issuer notified: 29 August 2007


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

12% to 13% 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)

                  27,535,054         27,535,054


Class/type of shares
if possible using the ISIN CODE      Resulting situation after the triggering
                                     transaction(vii)
              
              Number of shares   Number of voting rights (ix)  % of voting rights

GB00B1H0DZ51  Direct             Direct (x)   Indirect (xi)    Direct   Indirect

              22,187,958         22,187,958   5,762,631        10.45%   2.71%


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                      
                                                                               
27,950,589                       13.16%                                  


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 212,338,139

14. Contact name:   Diane Thirkettle


15. Contact telephone number: 01603 687 803