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):

Pantheon International Participants Plc

2. Reason for the notification                                        State    
                                                                     Yes/No    
                                                                               
An acquisition or disposal of voting rights                                    
                                                                               
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): Special Notification required by DTR           Yes     

3. Full name of person(s) subject to the notification obligation     Newton    
(iii):                                                             Investment  
                                                                   Management  
                                                                     Limited   
                                                                               
4. Full name of shareholder(s) (if different from 3.) (iv):          Newton    
                                                                   Investment  
                                                                   Management  
                                                                     Limited   
                                                                               
5. Date of the transaction (and date on which the threshold is                 
crossed                                                                        
or reached if different) (v):                                                  
                                                                               
6. Date on which issuer notified:                                 18 April 2007
                                                                               
7. Threshold(s) that is/are crossed or reached:                        N/A     
                                                                               
8. Notified details:                                                  ISIN     
                                                                  GB0004148507 

A: Voting rights attached to shares

 Class/type of       Situation       Resulting situation after the triggering  
     shares         previous to                 transaction (vii)              
  if possible     the Triggering                                               
 using the ISIN  transaction (vi)                                              
      CODE                                                                     
                                                                               
                 Number   Number    Number  Number of voting     % of voting   
                   of       of        of       rights (ix)         rights      
                 Shares   Voting    shares                                     
                          Rights                                               
                          (viii)                                               
                                                                               
                                    Direct  Direct  Indirect   Direct  Indirect
                                              (x)     (xi)                     
                                                                               
Ordinary shares                      N/A      N/A   1,028,192   N/A     3.88%  
  GB0004148507                                                                 
                                                                               

B: Financial Instruments

Resulting situation after the triggering transaction (xii)

   Type of     Expiration       Exercise/        Number of voting       % of   
  financial    date (xiii)      Conversion      rights that may be     voting  
 instrument                 Period/ Date (xiv)    acquired if the      rights  
                                                    instrument                 
                                                   is exercised/               
                                                     converted                 
                                                                               

Total (A+B)                                                                    
                                                                               
Number of voting rights                 % of voting rights                     
                                                                               
1,028,192                               3.88%                                  

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

Newton Investment Management Limited hold these shares as a discretionary      
Investment Manager.                                                            

Proxy Voting:


10. Name of the proxy holder:                                 N/A              
                                                                               
11. Number of voting rights proxy holder will cease to hold:  N/A              
                                                                               
12. Date on which proxy holder will cease to hold voting      N/A              
rights:                                                                        

13. Additional information:                                   N/A              
                                                                               
14. Contact name:                                             Clare Cox/Barry  
                                                              Smalls           
                                                                               
15. Contact telephone number:                                 [phone]    
                                                              2331/2251        

Annex Notification Of Major Interests In Shares (xvi)


A: Identity of the person or legal entity subject to the                       
notification obligation                                                        
                                                                               
Full name (including legal form for legal entities)           Newton Investment
                                                              Management Ltd   
                                                                               
Contact address (registered office for legal entities)        Mellon Financial 
                                                              Centre, 160 Queen
                                                              Victoria Street, 
                                                              London, EC4V 4LA 
                                                                               
Phone number                                                  [phone]    
                                                              9000             
                                                                               
Other useful information (at least legal representative for   Rachel Wheeler   
legal persons)                                                                 
                                                                               
B: Identity of the notifier, if applicable (xvii)                              
                                                                               
Full name                                                     Newton Investment
                                                              Management Ltd   
                                                                               
Contact address                                               Mellon Financial 
                                                              Centre, 160 Queen
                                                              Victoria Street, 
                                                              London, EC4V 4LA 
                                                                               
Phone number                                                  [phone]    
                                                              9000             
                                                                               
Other useful information (e.g. functional relationship with   Discretionary    
the person                                                    Investment       
or legal entity subject to the notification obligation)       Manager          

C: Additional information