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                   Leslie Knox                                 
                                                                               
Type of Transaction                Increase in beneficial interest following   
                                   purchase of shares (within Select ISA       
                                   pursuant to regular 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                   166                                         
                                                                               
Price per share                    £3.475                                      
                                                                               
Date and place of transaction      15 August 2007, UK.                         
                                                                               
Date Company Notified              16 August 2007.                             
                                                                               
Total share interests following    99,687                                      
this information:                                                              
                                                                               
Total percentage of issued class   0.015% (all interests)                      
                                                                               
This notification does not relate to dealings by persons otherwise connected   
with the named director.                                                       

Name of Company                    Alliance Trust PLC                          
                                                                               
Name of Director                   Christopher Masters                         
                                                                               
Type of Transaction                Increase in beneficial interest following   
                                   purchase of shares (within Select Investment
                                   Plan pursuant to regular 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                   21                                          
                                                                               
Price per share                    £3.475                                      
                                                                               
Date and place of transaction      15 August 2007, UK.                         
                                                                               
Date Company Notified              16 August 2007.                             
                                                                               
Total share interests following    10,534                                      
this information:                                                              
                                                                               
Total percentage of issued class   0.002% (all interests)                      
                                                                               
This notification does not relate to dealings by persons otherwise connected   
with the named director.                                                       

Name of Company                    Alliance Trust PLC                          
                                                                               
Name of Director                   Alan Harden                                 
                                                                               
Type of Transaction                Increase in beneficial interest following   
                                   purchase of shares (within Select Pension   
                                   pursuant to regular 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                   1,270                                       
                                                                               
Price per share                    £3.475                                      
                                                                               
Date and place of transaction      15 August 2007, UK.                         
                                                                               
Date Company Notified              16 August 2007.                             
                                                                               
Total share interests following                                                
this information:                                                              
                                                                               
Beneficially Owned (including      47,335                                      
self, connected persons and Share                                              
Incentive                                                                      
                                                                               
Plan excluding Employee Benefit                                                
Trust)                                                                         
                                                                               
Beneficial interest in shares held 25,185                                      
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   0.176% (all interests)                      
                                                                               
This notification does not relate to dealings by persons otherwise connected   
with the named director.                                                       

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 regular 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                   549                                         
                                                                               
Price per share                    £3.475                                      
                                                                               
Date and place of transaction      15 August 2007. UK.                         
                                                                               
Date Company Notified              16 August 2007.                             
                                                                               
Total share interests following                                                
this information:                                                              
                                                                               
Beneficially Owned (including      18,112                                      
self, 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                    Ian Anderson                                
                                                                               
Telephone Number                   [phone]                          
                                                                               
Date of notification               16 August 2007