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                   David Alun Deards                           
                                                                               
Type of Transaction                Increase in beneficial interest following   
                                   purchase of shares (within Select ISA       
                                   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                   164                                         
                                                                               
Price per share                    £3.5275                                     
                                                                               
Date and place of transaction      23 August 2007. UK.                         
                                                                               
Date Company Notified              24 August 2007.                             
                                                                               
Total share interests following                                                
this information:                                                              
                                                                               
Beneficially Owned (including      42,318                                      
self, connected persons and Share                                              
Incentive                                                                      
                                                                               
Plan excluding Employee Benefit                                                
Trust)                                                                         
                                                                               
Beneficial interest in shares held 12,496                                      
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   0.173% (all interests)                      
                                                                               

This notification does not relate to dealings by persons otherwise connected   
with the named director.                                                       
                                                                               
Name of contact                    Mr. Donald McPherson                        
                                                                               
Telephone Number                   [phone]                          
                                                                               
Date of notification               24 August 2007