Director/PDMR Shareholding

Announcement of Director's interests in securities by Alliance Trust PLC       
                                                                               
Director's interests in securities                                             
                                                                               

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 Pension  
                                    pursuant to regular standing instruction). 
                                                                               
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                    1,258                                      
                                                                               
Price per share                     £3.51                                      
                                                                               
Date and place of transaction       18 December 2007. UK.                      
                                                                               
Date Company Notified               19 December 2007.                          
                                                                               
Total share interests following                                                
this information:                                                              
                                                                               
Beneficially Owned (including self, 53,745                                     
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 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)          
                                                                               
Class of Security                   Ordinary 2.5p shares                       
                                                                               
Name of registered holder           Alliance Trust Savings Nominees Limited    
                                                                               
Number of shares                    544                                        
                                                                               
Price per share                     £3.51                                      
                                                                               
Date and place of transaction       18 December 2007. UK.                      
                                                                               
Date Company Notified               19 December 2007.                          
                                                                               
Total share interests following                                                
this information:                                                              
                                                                               
Beneficially Owned (including self, 21,375                                     
connected persons and Share                                                    
Incentive                                                                      
                                                                               
Plan excluding Employee Benefit                                                
Trust)                                                                         
                                                                               
Beneficial interest in shares held  4,258                                      
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    0.168% (all interests)                     
                                                                               
This notification does not relate to dealings by persons otherwise connected   
with the named director.                                                       
                                                                               
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)          
                                                                               
Class of Security                   Ordinary 2.5p shares                       
                                                                               
Name of registered holder           Alliance Trust Savings Nominees Limited    
                                                                               
Number of shares                    164                                        
                                                                               
Price per share                     £3.51                                      
                                                                               
Date and place of transaction       18 December 2007. UK.                      
                                                                               
Date Company Notified               19 December 2007.                          
                                                                               
Total share interests following     100,750                                    
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 contact                   Mr. Donald McPherson                         
                                                                               
Telephone Number                  [phone]                           
                                                                               
Date of notification              19 December 2007