Stabilisation Notice

Not for distribution, directly or indirectly, in or into the United States or any jurisdiction in which such distribution would be unlawful.

GlaxoSmithKline Capital plc 

Stabilisation Notice

5 September 2017

Morgan Stanley & Co. International plc (contact: Morgan Stanley Debt Syndicate - Matteo Benedetto; telephone: +442076773409) hereby gives notice that the Stabilising Managers named below may stabilise the offer of the following securities in accordance with Commission Delegated Regulation (EU) 2016/1052 of 8 March 2016 supplementing Regulation (EU) No 596/2014.

In connection with the offer of the above securities, the Stabilising Managers may over-allot the securities or effect transactions with a view to supporting the market price of the securities at a level higher than that which might otherwise prevail. However, there is no assurance that the Stabilising Managers will take any stabilisation action and any stabilisation action, if begun, may be ended at any time. Any stabilisation action or over-allotment shall be conducted in accordance with all applicable laws and rules.

This announcement is for information purposes only and does not constitute an invitation or offer to underwrite, subscribe for or otherwise acquire or dispose of any securities of the Issuer in any jurisdiction.

This announcement and the offer of the securities to which it relates are only addressed to and directed at persons outside the United Kingdom and persons in the United Kingdom who have professional experience in matters related to investments or who are high net worth persons within article 12(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 and must not be acted on or relied on by other persons in the United Kingdom.

In addition, if and to the extent that this announcement is communicated in, or the offer of the securities to which it relates is made in, any EEA Member State that has implemented Directive 2003/71/EC (together with any applicable implementing measures in any Member State, the "Prospectus Directive") before the publication of a prospectus in relation to the securities which has been approved by the competent authority in that Member State in accordance with the Prospectus Directive (or which has been approved by a competent authority in another Member State and notified to the competent authority in that Member State in accordance with the Prospectus Directive), this announcement and the offer are only addressed to and directed at persons in that Member State who are qualified investors within the meaning of the Prospectus Directive (or who are other persons to whom the offer may lawfully be addressed) and must not be acted on or relied on by other persons in that Member State.

This announcement is not an offer of securities for sale into the United States. The securities have not been, and will not be, registered under the United States Securities Act of 1933 and may not be offered or sold in the United States absent registration or an exemption from registration. There will be no public offer of securities in the United States.

END.