Holding(s) in Company

For filings with the FSA include the annex                                              
                                                                                        
For filings with issuer exclude the annex                                               
                                                                                        
                                                                                        
TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                         
                                                                                        
                                                                                        
1. Identity of the issuer or the underlying issuer                                      
of existing shares to which voting rights are                 Crystal Amber Fund Limited
attached:ii                                                                             
                                                                                        
2. Reason for the notification (please tick the appropriate box or boxes):               
                                                                                        
An acquisition or disposal of voting rights                                             
                                                                                        
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): Change in Share Capital                                   X
                                                                                        
3. Full name of person(s) subject to the                    Invesco Limited             
notification obligation:iii                                                             
                                                                                        
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                           02 January 2013             
reached: v                                                                              
                                                                                        
6. Date on which issuer notified:                 14 January 2013 - Late Notification   
                                                                                        
7. Threshold(s) that is/are crossed or                            30%                   
reached: vi, vii                                                                        


8. Notified details:                                                                                                 
                                                                                                                     
A: Voting rights attached to shares viii, ix                                                                         
                                                                                                                     
Class/type   Situation previous                     Resulting situation after the triggering transaction         
of           to the triggering                                                                                      
shares       transaction                                                                                            
                                                                                                                    
             Number               Number            Number   Number of voting              % of  voting rights x
if possible  of                   of                of       rights                                              
using        Shares               Voting            shares                                                       
the ISIN                          Rights                                                                         
CODE                                                Direct   Direct xi          Indirect   Direct  Indirect     
                                                                                xii                             
                                                                                                                     
GG00B1Z2SL48                                                                                                         
             17,700,000           17,700,000                                    17,700,000         30.00%       
Ordinary 1p                                                                                                          
Shares                                                                                                               
                                                                                                                     
                                                                                                                     
                                                                                                                     
B: Qualifying Financial Instruments                                                                                  
                                                                                                                     
Resulting situation after the triggering transaction                                                                 
                                                                                                                     
Type of        Expiration              Exercise/                  Number of voting                 % of voting    
financial      date xiii               Conversion Period xiv      rights that may be               rights         
instrument                                                        acquired if the                                    
                                                                  instrument is                                      
                                                                  exercised/ converted.                              
                                                                                                                     
                                                                                                                     
                                                                                                                     
C: Financial Instruments with similar economic effect to Qualifying Financial                                        
Instruments xv, xvi                                                                                                  
                                                                                                                     
Resulting situation after the triggering transaction                                                                 
                                                                                                                     
Type of       Exercise price          Expiration date Exercise/  Number of voting rights        % of voting rights
financial                             xvii            Conversion instrument refers to           xix, xx           
instrument                                            period                                                         
                                                      xviii                                                          
                                                                                                                     
                                                                                                Nominal Delta      
                                                                                                                     
                                                                                                                     
                                                                                                                     
Total (A+B+C)                                                                                                        
                                                                                                                   
Number of voting rights                                   Percentage of voting rights                             
                                                                                                                     
17,700,000                                                30.00%                                                  
                                                                                                                     


9. Chain of controlled undertakings through which the voting rights and/or the          
financial instruments are effectively held, if applicable: xxi                          
                                                                                        
                                                                                        
Invesco Fund Managers Limited - 17,700,000                                              
                                                                                        
                                                                                        
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:                                                Samantha Edwards       
                                                                                        
15. Contact telephone number:                                    01491 416381