Dr Gilligan trained at the University of Edinburgh and the University of Cambridge. He is at Addenbrooke’s and Royal Papworth Hospitals in Cambridge and an Associate Lecturer at the University of Cambridge. His specialist training in oncology was at The Christie Hospital, The Royal Marsden Hospital, and University College Hospitals, London. Dr Gilligan has been a member of the NCRI Lung Cancer Studies Group and is currently a member of Council, Royal College of Radiologists and of the NHS England Lung Cancer Expert Group. He sits on the Steering Committee of the British Thoracic Oncology Group (BTOG).