Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES                                              
                                                                                            
                                                                                            
                                                                                            
1. Identity of the issuer or the underlying issuer                                          
of existing shares to which voting rights are                 TULLETT PREBON PLC            
attached:                                                                                   
                                                                                            
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):                                                                                   
                                                                                            
3. Full name of person(s) subject to the    CREDIT SUISSE GROUP AG                          
notification obligation:                                                                    
                                                                                            
                                                                                            
4. Full name of shareholder(s)              CREDIT SUISSE SECURITIES (EUROPE) LTD           
 (if different from 3.):                                                                    
                                            CREDIT SUISSE ASSET MANAGEMENT LLC              
                                                                                            
                                                                                            
5. Date of the transaction and date on                                                      
which the threshold is crossed or           11/03/2011                                      
reached:                                                                                    
                                                                                            
6. Date on which issuer notified:           14/03/11                                        
                                                                                            
7. Threshold(s) that is/are crossed or      5%                                              
reached:                                                                                    
                                                                                            
8. Notified details:                                                                           
                                                                                               
A: Voting rights attached to shares                                                            
                                                                                               
Class/type of  Situation previous           Resulting situation after the triggering           
shares         to the triggering            transaction                                        
               transaction                                                                     
                                                                                               
if possible    Number        Number         Number    Number of voting    % of  voting rights  
using          of            of             of shares rights                                   
the ISIN CODE  Shares        Voting                                                            
                             Rights         Direct    Direct  Indirect    Direct       Indirect
                                                                                               
ORD                                                                                            
                                                                                               
GB00B1H0DZ51   Not           Not            N/A       N/A     10,801,005  N/A          5.0164% 
               reportable    reportable                                                                  
                                                                                               
                                                                                               
B: Qualifying Financial Instruments                                                            
                                                                                               
Resulting situation after the triggering transaction                                           
                                                                                               
Type of financial      Expiration  Exercise/              Number of voting        % of voting  
instrument             date        Conversion Period      rights that may be      rights       
                                                          acquired if the                      
                                                          instrument is                        
                                                          exercised/ converted.                
                                                                                               
N/A                                                                                            
                                                                                               
                                                                                               
C: Financial Instruments with similar economic effect to Qualifying Financial                  
Instruments xv, xvi                                                                            
                                                                                               
Resulting situation after the triggering transaction                                           
                                                                                               
Type of financial  Exercise  Expiration Exercise/     Number of voting       % of voting rights
instrument         price     date       Conversion    rights instrument                        
                                        period        refers to                                
                                                                                               
                                                                                               
                                                                                               
                                                                             Nominal   Delta   
N/A                                                                                            
                                                                                               
                                                                                               
Total (A+B+C)                                                                                  
                                                                                               
Number of voting rights                          Percentage of voting rights                   
                                                                                               
                                                                                               
                   10,801,005                                       5.0164%                    
                                                                                               

9. Chain of controlled undertakings through which the voting rights and/or the            
financial instruments are effectively held, if applicable:                                
                                                                                          
                                                                                          
 1. Credit Suisse Group AG                                                                
 2. Credit Suisse AG                                                                      
 2.1. Credit Suisse Securities (Europe) Ltd                                    
 2.2. Credit Suisse Asset Management LLC                                       
                                                                                          
                                                                                          
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:                           Anthony Allen/ Liane Agostini                 
                                                                                          
15. Contact telephone number:               [phone]/ 3599                    
                                                                                          


 

Note: Annex should only be submitted to the FSA not the issuer                           
                                                                                         
Annex: Notification of major interests in shares                                         
                                                                                         
                                                                                         
                                                                                         
A: Identity of the persons or legal entity subject to the notification                   
obligation                                                                               
                                                                                         
Full name                                                                                
                                                                                         
(including legal form of legal entities)    Credit Suisse Group AG                       
                                                                                         
                                                                                         
                                                                                         
Contact address                                                                          
                                                                                         
(registered office for legal entities)      One Cabot Square, London E14 4QJ             
                                                                                         
                                                                                         
                                                                                         
Phone number & email                                                                     
                                            020 7883 5416 [e-mail]
                                                                                         
                                                                                         
Other useful information                                                                 
                                                                                         
(at least legal representative for legal    Anthony Allen                                
persons)                                                                                 
                                                                                         
                                                                                         
                                                                                         
                                                                                         
                                                                                         
B: Identity of the notifier, if applicable                                               
                                                                                         
Full name                                                                                
                                                                                         
                                                                                         
                                                                                         
Contact address                                                                          
                                                                                         
                                                                                         
                                                                                         
Phone number & email                                                                     
                                                                                         
                                                                                         
                                                                                         
Other useful information                                                                 
                                                                                         
(e.g. functional relationship with the                                                   
person or legal entity subject to the                                                    
notification obligation)                                                                 
                                                                                         
                                                                                         
                                                                                         
C: Additional information                                                                
                                                                                         
Our ref: 1353535