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GSK statement in response to OFT Statement of Objections

Issued: Friday 19 April 2013, London UK

GSK supports fair competition and we very strongly believe that we acted within the law, as the holder of valid patents for paroxetine, in entering the agreements under investigation. These arrangements resulted in other paroxetine products entering the market before GSK's patents had expired.

We have cooperated fully with the Office of Fair Trading in this investigation, which covers activities that happened between 2001 and 2004. The paroxetine supply agreements under investigation were terminated in 2004.

The OFT investigation covers matters that have already been investigated by the European Commission in 2005-2006. In March 2012 the Commission announced that it had formally concluded its enquiry with no further action. The issues were also reviewed in the European Commission’s 2008-2009 Sector Inquiry. Neither investigation resulted in any sanctions against the company.

OFT’s intention to issue a Statement of Objections was detailed in our Annual Report, published in March 2013. As we have just received the Statement of Objections, we will need time to carefully review it before considering any further action.

GlaxoSmithKline – one of the world’s leading research-based pharmaceutical and healthcare companies – is committed to improving the quality of human life by enabling people to do more, feel better and live longer. For further information please visit www.gsk.com

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Cautionary statement regarding forward-looking statements GSK cautions investors that any forward-looking statements or projections made by GSK, including those made in this announcement, are subject to risks and uncertainties that may cause actual results to differ materially from those projected. Factors that may affect GSK' s operations are described under Item 3.D 'Risk factors' in the company's Annual Report on Form 20-F for 2012.