Director/PDMR Shareholding

Announcement of Director's interests in securities by Alliance Trust PLC       
                                                                               
Director's interests in securities                                             
                                                                               

Name of Company                    Alliance Trust PLC                          
                                                                               
Name of Director                   Lesley Mary Samuel Knox                     
                                                                               
Type of Transaction                Increase in beneficial interest following   
                                   purchase of shares (within Select Pension   
                                   pursuant to regular standing instruction) by
                                   child under 18 years.                       
                                                                               
Reason for Notification            A transaction required to be notified in    
                                   accordance with DTR 3.1.4R(1) (a) and DTR   
                                   3.1.4(R) (1) (b)                            
                                                                               
Class of Security                  Ordinary 2.5p shares                        
                                                                               
Name of registered holder          Alliance Trust Savings Nominees Limited     
                                                                               
Number of shares                   18                                          
                                                                               
Price per share                    £3.45                                       
                                                                               
Date and place of transaction      29 August 2007. UK.                         
                                                                               
Date Company Notified              30 August 2007.                             
                                                                               
Total share interests following    99,705                                      
this information:                                                              
                                                                               
Total percentage of issued class   0.015% (all interests)                      

Name of Company                     Alliance Trust PLC                         
                                                                               
Name of Director                    Janet Pope                                 
                                                                               
Type of Transaction                 Increase in beneficial interest following  
                                    purchase of shares (within Select          
                                    Investment Plan pursuant to standing       
                                    instruction).                              
                                                                               
Reason for Notification             A transaction required to be notified in   
                                    accordance with DTR 3.1.4R(1) (a) and DTR  
                                    3.1.4(R) (1) (b)                           
                                                                               
Class of Security                   Ordinary 2.5p shares                       
                                                                               
Name of registered holder           Alliance Trust Savings Nominees Limited    
                                                                               
Number of shares                    237                                        
                                                                               
Price per share                     £3.45                                      
                                                                               
Date and place of transaction       29August 2007. UK.                         
                                                                               
Date Company Notified               30August 2007.                             
                                                                               
Total share interests following                                                
this information:                                                              
                                                                               
Beneficially Owned (including self, 18,349                                     
connected persons and Share                                                    
Incentive                                                                      
                                                                               
Plan excluding Employee Benefit                                                
Trust)                                                                         
                                                                               
Beneficial interest in shares held  4,258                                      
for director by Trustee of Employee                                            
Benefit Trust                                                                  
                                                                               
Deemed beneficial interest in       1,108,624                                  
shares held for company by Trustee                                             
of Employee Benefit Trust                                                      
                                                                               
Total percentage of issued class    0.168% (all interests)                     
                                                                               
This notification does not relate to dealings by persons otherwise connected   
with the named director.                                                       
                                                                               
Name of contact                   Mr. Ian Anderson                             
                                                                               
Telephone Number                  [phone]                           
                                                                               
Date of notification              30 August 2007