Additional Listing

GlaxoSmithKline PLC
31 May 2006

Application has been made to The UK Listing Authority and the London Stock
Exchange for block listings totalling 22,140,034 Ordinary shares of 25p each to
trade on the London Stock Exchange and to be admitted to the Official List upon
issuance. The shares shall rank equally with the existing issued shares of the
Company.

The Block listings consist of 1,000,000 shares to be issued under the
GlaxoSmithKline Share Option Plan - Ordinary shares,20,000,000 shares under the
GlaxoSmithKline Share Option Plan - ADS, 1,000,000 shares under the Glaxo
Wellcome 1999 Share Option Plan and 140,034 shares to be issued under the
SmithKline Beecham 1989 Executive Share Option Plan - Approved-Ordinary shares.


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