Director Declaration

GlaxoSmithKline PLC
14 June 2004


              GlaxoSmithKline plc Non-Executive Directors' details


Further to the Company's announcement dated 26 May 2004, the following details
for Sir Christopher Gent and Sir Deryck Maughan 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 June 2004.

Sir Christopher Gent - Non-Executive Deputy Chairman

The following table shows Sir Christopher's current and past directorships of
publicly quoted companies during the past five years.

Company                                            Country of incorporation

Current directorships

Lehman Brothers Holdings, Inc.                               USA

Past directorships

Vodafone Group plc                                     England & Wales


Sir Christopher does not hold or have any notifiable interests in any
GlaxoSmithKline plc Ordinary Shares or American Depositary Shares.

Sir Deryck Maughan - Non-Executive Director

The following table shows Sir Deryck's current and past directorships of
publicly quoted companies during the past five years.

Company                                            Country of incorporation

Current directorships

Citibank N.A.                                                USA

Past directorships

New York Stock Exchange, Inc.                                USA

Sir Deryck does not hold or have any notifiable interests in any GlaxoSmithKline
plc Ordinary Shares or American Depositary Shares.

Paragraph 6.F.2 (b) to (g) Financial Services Authority's Listing Rules

Neither Sir Christopher nor Sir Deryck has any details to disclose in respect of
paragraph 6.F.2 (b) to (g) of the Financial Services Authority's Listing Rules.


S M Bicknell
Company Secretary
14 June 2004


                      This information is provided by RNS
            The company news service from the London Stock Exchange