Dr John Brown, PhD MBA FRSE, has extensive experience in the life sciences sector. He is Chairman of BTG plc and CXR Biosciences Ltd. a non-executive Director of Vectura Group plc, and Axis_Shield plc, and was a Director of Cambridge Antibody Technology plc until its acquisition by AstraZeneca .

In the public sector he Chairs the Roslin Foundation and the Life Sciences Industry Advisory Board for the Scottish Government. He is an advisor to several private equity and venture capital funds, a Fellow of the Royal Society of Edinburgh and Honorary Professor of the University of Edinburgh.

Until Dec 2003, John was Chief Executive of Acambis plc, a leading producer of vaccines to treat and prevent infectious disease. Dr Brown joined Acambis as Finance Director in 1995 and was appointed CEO in 1997.