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                                  Mr 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                                  1,208                                                           
                                                                                                                  
Price per share                                   £3.6575                                                         
                                                                                                                  
Date and place of transaction                     19 September 2007. UK.                                          
                                                                                                                  
Date Company Notified                             20 September 2007.                                              
                                                                                                                  
Total share interests following this information:                                                                 
                                                                                                                  
Beneficially Owned (including self, connected     48,861                                                          
persons and Share Incentive                                                                                       
                                                                                                                  
Plan excluding Employee Benefit Trust)                                                                            
                                                                                                                  
Beneficial interest in shares held for director   25,185                                                          
by Trustee of Employee Benefit Trust                                                                              
                                                                                                                  
Deemed beneficial interest in shares held for     1,108,624                                                       
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.                                                                                          
                                                                                                                  
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Name of Director                                  Mrs Lesley 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                                  157                                                             
                                                                                                                  
Price per share                                   £3.6575                                                         
                                                                                                                  
Date and place of transaction                     19 September 2007. UK.                                          
                                                                                                                  
Date Company Notified                             20 September 2007.                                              
                                                                                                                  
Total share interests following this information: 99,927                                                          
                                                                                                                  
Total percentage of issued class                  0.015% (all interests)                                          
                                                                                                                  
This notification does not relate to dealings by persons otherwise connected                                      
with the named director.                                                                                          
                                                                                                                  
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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                                  522                                                             
                                                                                                                  
Price per share                                   £3.6575                                                         
                                                                                                                  
Date and place of transaction                     19 September 2007. UK.                                          
                                                                                                                  
Date Company Notified                             20 September 2007.                                              
                                                                                                                  
Total share interests following this information:                                                                 
                                                                                                                  
Beneficially Owned (including self, connected     18,907                                                          
persons and Share Incentive                                                                                       
                                                                                                                  
Plan excluding Employee Benefit Trust)                                                                            
                                                                                                                  
Beneficial interest in shares held for director   4,258                                                           
by Trustee of Employee Benefit Trust                                                                              
                                                                                                                  
Deemed beneficial interest in shares held for     1,108,624                                                       
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.                                                                                          
                                                                                                                  
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Name of contact                                   Ian Anderson                                                    
                                                                                                                  
Telephone Number                                  [phone]                                              
                                                                                                                  
Date of notification                              24 September 2007