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                    Mrs Lesley Knox                            
                                                                               
Type of Transaction                 Increase in beneficial interest following  
                                    purchase of shares (within Select Pension  
                                    Plan 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                    65                                         
                                                                               
Price per share                     £3.52                                      
                                                                               
Date and place of transaction       12 September 2007, UK.                     
                                                                               
Date Company Notified               13 September 2007.                         
                                                                               
Total share interests following     99,770                                     
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                   Mr Alan Harden                              
                                                                               
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                   282                                         
                                                                               
Price per share                    £3.52                                       
                                                                               
Date and place of transaction      12 September 2007. UK.                      
                                                                               
Date Company Notified              13 September 2007.                          
                                                                               
Total share interests following                                                
this information:                                                              
                                                                               
Beneficially Owned (including      47,653                                      
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 contact                    Ian Anderson                                
                                                                               
Telephone Number                   [phone]                          
                                                                               
Date of notification               13 September 2007