Director Declaration

GlaxoSmithKline PLC
09 January 2006



              GlaxoSmithKline plc Non-Executive Directors' details



Further to the announcement dated 22 December 2005, the following details for Dr
Ralph Horwitz and Mr Tom de Swaan are provided in accordance with the
requirements of the Financial Services Authority's Listing Rules on their
appointment to the Board of GlaxoSmithKline plc with effect from 1 January 2006.



Dr Ralph Horwitz - Non-Executive Director



Dr Horwitz has not been a director of a publicly quoted company during the past
five years.  Neither does he hold or have any notifiable interests in any
GlaxoSmithKline plc Ordinary Shares or American Depositary Shares.





Mr Tom de Swaan - Non-Executive Director



The following table shows Mr de Swaan's current and past directorships of
publicly quoted companies during the past five years.




Company                                                Country of incorporation


Current directorships
ABN AMRO Bank N.V.                                          Netherlands
ABN AMRO Holding N.V.                                       Netherlands
Saudi Hollandi Bank                                        Saudi Arabia

Past directorships
LeasePlan Corporation N.V.                                  Netherlands



Mr de Swaan does not hold or have any notifiable interests in any
GlaxoSmithKline plc Ordinary Shares or American Depositary Shares.





Paragraph 9.6.13 R (2) to (6) Financial Services Authority's Listing Rules



Neither Dr Horwitz nor Mr de Swaan has any details to disclose in respect of
paragraph 9.6.13 R (2) to (6) of the Financial Services Authority's Listing
Rules.







S M Bicknell

Company Secretary

9 January 2006


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