Professor of Paediatric Cardiac Surgery at University College, London 

Emeritus Professor of Physic at Gresham College, London

Charity Ambassador for the GOSH Children's Charity

Cardiothoracic Surgeon at the Great Ormond Street Hospital for Children NHS FT

Chief Medical Officer, Allocate Software Ltd, Richmond

Non-Executive Director, The Royal Marsden NHS FT

Non-Executive Director, Children's Hospital Group, Dublin