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 Knox                                
                                                                               
Type of Transaction                 Increase in beneficial interest following  
                                    purchase of shares by spouse.              
                                                                               
Reason for Notification             A transaction required to be notified in   
                                    accordance with DTR 3.1.4R(1) (a)          
                                                                               
Class of Security                   Ordinary 2.5p shares                       
                                                                               
Name of registered holder           Alliance Trust Savings Nominees Limited    
                                                                               
Number of shares                    8,000                                      
                                                                               
Price per share                     £3.51                                      
                                                                               
Date and place of transaction       20 May 2008. UK.                           
                                                                               
Date Company Notified               20 May 2008.                               
                                                                               
Total share interests following     110,356                                    
this information:                                                              
                                                                               
Total percentage of issued class    0.016% (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              20 May 2008