Director/PDMR Shareholding

Announcement of Director's interests in securities by The Alliance Trust PLC   
                                                                               
Director's interests in securities                                             
                                                                               
Name of Company                    The Alliance Trust PLC                      
                                                                               
Name of Director                   Lesley Knox                                 
                                                                               
Type of Transaction                Increase in beneficial interest following   
                                   purchase of shares (within Select Pension   
                                   pursuant to regular standing order and      
                                   standing election) made by child under 18   
                                   years.                                      
                                                                               
Reason for Notification            A transaction required to be notified in    
                                   accordance with DR 3.1.4R(1) (a) and DR     
                                   3.1.4(R) (1) (b) [section 324 as extended by
                                   section 328 of the Companies Act 1985 or    
                                   entered into the Company's register in      
                                   accordance with s325(3) or (4)of the        
                                   Companies Act 1985]                         
                                                                               
Class of Security                  Ordinary 25p shares                         
                                                                               
Name of registered holder          Alliance Trust Savings Nominees Limited     
                                                                               
Number of shares                   6                                           
                                                                               
Price per share                    £37.82                                      
                                                                               
Date and place of transaction      13 April 2006 UK.                           
                                                                               
Date Company Notified              14 April 2006                               
                                                                               
Total share interests following    2,212                                       
this information                                                               
                                                                               
Total percentage of issued class   0.004% (all interests)                      
                                                                               
This notification does not relate to dealings by persons otherwise connected   
with the named director.                                                       
                                                                               
Name of Company                    The Alliance Trust PLC                      
                                                                               
Name of Director                   Alan Harden                                 
                                                                               
Type of Transaction                Increase in beneficial interest following   
                                   purchase of shares (within Select Investment
                                   pursuant to regular standing order and      
                                   standing election).                         
                                                                               
Reason for Notification            A transaction required to be notified in    
                                   accordance with DR 3.1.4R(1) (a) and DR     
                                   3.1.4(R) (1) (b) [section 324 as extended by
                                   section 328 of the Companies Act 1985 or    
                                   entered into the Company's register in      
                                   accordance with s325(3) or (4)of the        
                                   Companies Act 1985]                         
                                                                               
Class of Security                  Ordinary 25p shares                         
                                                                               
Name of registered holder          Alliance Trust Savings Nominees Limited     
                                                                               
Number of shares                   13                                          
                                                                               
Price per share                    £37.82                                      
                                                                               
Date and place of transaction      13 April 2006 UK.                           
                                                                               
Date Company Notified              14 April 2006                               
                                                                               
Total share interests following                                                
this information:                                                              
                                                                               
Beneficially Owned (including      1,126                                       
self, connected persons and Share                                              
Incentive                                                                      
                                                                               
Plan excluding Employee Benefit                                                
Trust)                                                                         
                                                                               
Beneficial interest in shares held 500                                         
for director by Trustee of                                                     
Employee Benefit Trust                                                         
                                                                               
Deemed beneficial interest in      6,987                                       
shares held for company by Trustee                                             
of Employee Benefit Trust                                                      
                                                                               
Total percentage of issued class   0.017% (all interests)                      
                                                                               
This notification does not relate to dealings by persons otherwise connected   
with the named director.                                                       
                                                                               
Name of contact                    Mr. Ian Goddard                             
                                                                               
Telephone Number                   01382 201700                                
                                                                               
Date of notification               18 April 2006