John is a Non-Executive Director of several companies including Histoindex Pte and EM Imaging Ltd. He was previously the Chairman of Cardiff University, Deputy Chief Executive of the Medical Research Council and Chaired the Trustee Board of LifeArc. An advisor to public and third-sector organisations, he was appointed by the Prime Minister in 2014 as the Life Science Champion for medical technology.

John has served on several UK Government bodies, including the Science Advisory Council for Wales, and was a founder and Trustee of the Francis Crick Institute. He advises the Singapore Government on Life Science matters and chairs the oversight Committee for their Diagnostics Hub. During an industrial career spanning 35 years, he held international leadership positions in Smith & Nephew, Bristol Myers Squibb, Johnson & Johnson and Amersham plc.

John headed the commercial function of GE’s Life Science business and was the Chairman of its UK Healthcare Company. He was awarded a CBE for services to Life Sciences, Healthcare and Science in 2012 and a Public Service Medal from the Singapore Government in 2021.