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 Mary Samuel Knox

Type of Transaction                 Increase in beneficial interest following
                                    purchase of shares (within Select Pension
                                    Plan pursuant to regular standing
                                    instruction) by child under 18 years.

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                    62

Price per share                     £3.7050

Date and place of transaction       11 July 2007. UK.

Date Company Notified               12 July 2007.

Total share interests following     99,190
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 Company                     Alliance Trust PLC

Name of Director                    Alan Jerry Harden

Type of Transaction                 Increase in beneficial interest following
                                    purchase of shares (within Select Investment
                                    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                    268

Price per share                     £3.7050

Date and place of transaction       11 July 2007. UK.

Date Company Notified               12 July 2007.

Total share interests following
this information:

Beneficially Owned (including       44,372
self, connected persons and
Share Incentive Plan excluding
Employee Benefit Trust)

Beneficial interest in shares       25,185
held 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    0.175% (all interests)

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

Name of contact                     Mr. Ian Anderson

Telephone Number                    [phone]

Date of notification                12 July 2007