Director/PDMR Shareholding

GlaxoSmithKline PLC
17 October 2007



   Notification of Transactions of Directors, Persons Discharging Managerial
                      Responsibility or Connected Persons


The Administrators of the Deferred Investment Award Plan notified the Company
and the under-mentioned person on 17 October 2007 of an increase in their
interests in Ordinary Share ADRs at a price of $52.40 per ADR following the
re-investment of the dividend paid to shareholders on 11 October 2007.


Dr R G Greig                                                       48.30


This notification relates to a transaction notified in accordance with
Disclosure and Transparency Rule 3.1.4R(1)(a).



S M Bicknell
Company Secretary

17 October 2007


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