Director/PDMR Shareholding

Alliance Trust PLC

Disclosure of Directors Interests in shares

Alliance Trust PLC ("the Company") on 20 August 2008 received notification from
RBC Cees Trustees Limited as Trustee of Alliance Trust PLC Employee Benefit
Trust ("the Trust") (a discretionary trust of which all employees of the
Company and its subsidiaries are beneficiaries), that on 20 August 2008, 1,735
Ordinary 2.5p shares in the capital of the Company which had been purchased on
behalf of the Company to meet future awards made under the Alliance Trust
Senior Management Equity Incentive Plan (`SMEIP') had been transferred to
satisfy awards made under the SMEIP which had vested.

Alan Harden, David Deards and Katherine Garrett-Cox, all executive directors,
and Rowland Strickland, Person Discharging Managerial Responsibilities, are all
members of the class of discretionary beneficiaries of the Trust and are each
consequently deemed to have an interest in the shares held in the Trust on
behalf of the Company which now total 1,854,285 (0.276% of the Company's issued
share capital).

For further information please contact:

Name of contact       Mr. Ian Anderson                                
                                                                      
Telephone Number      [phone]                              
                                                                      
Date of notification  20 August 2008