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                       Alan Jerry Harden

Type of Transaction                    Increase in beneficial interest following
                                       purchase of shares (within Select Pension
                                       Plan 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                       1,163

Price per share                        £3.7955

Date and place of transaction          15 May 2007. UK.

Date Company Notified                  16 May 2007.

Total share interests following                 
this information:

Beneficially Owned (including          42,572
self, connected persons and Share                                              
Incentive Plan excluding Employee
Benefit Trust)

Beneficial interest in shares          15,959
held for director by Trustee of
Employee Benefit Trust

Deemed beneficial interest in          162,939
shares held for company by
Trustee of Employee Benefit Trust
                                                                               
Total percentage of issued class       0.033% (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) 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                       854

Price per share                        £3.7955

Date and place of transaction          15 May 2007. UK.

Date Company Notified                  16 May 2007.

Total share interests following
this information:

Beneficially Owned (including          16,107
self, connected persons and Share
Incentive Plan excluding Employee
Benefit Trust)

Beneficial interest in shares          0
held for director by Trustee
of Employee Benefit Trust

Deemed beneficial interest in          0
shares held for company by
Trustee of Employee Benefit Trust

Total percentage of issued class       0.002% (all interests)

This notification does not relate to dealings by persons otherwise connected
with the named director.

Name of contact                        Donald McPherson

Telephone Number                       [phone]

Date of notification                   16 May 2007