Dr Amen Sibtain is a Consultant Oncologist and Medical Director of Leaders in Oncology Care & The Harley Street Clinic in London. He was formally Clinical Director of GI oncology and Radiotherapy at St Bartholomew's Hospital and has been an examiner for the Royal College of Radiologists, part of the medical advisory panel for Macmillan, oncology advisor for BBC Drama and Clinical Lead in Head and Neck Cancer at Barts. He was previously President of the Oncology Section of the Royal Society of Medicine, Programme Director for Clinical Oncology Specialist Training Committee for the London Deanery and Chair of the Head and Neck Tumour Board for NE London. He worked at the Royal Marsden, Mount Vernon and The Middlesex Hospital, before his post at Barts. He was awarded an MD degree for research in tumour hypoxia by the University of London. He has been published in a number of peer-reviewed journals and edited the books Towards the Prevention of Cancer (2007) and Physics for Clinical Oncologists (2012) Andrew Morgan is a Clinical Scientist with 40 years' experience in Radiotherapy Physics. He worked for 26 years at Cookridge Hospital, Leeds. From 2003 to 2007, he was part of the Senior Management Group which oversaw the commissioning of the Bexley Oncology Wing at St James' Hospital, Leeds. In 2008, he moved to Taunton as a Head of Physics to help establish a new radiotherapy service at Musgove Park Hospital, Leeds. During his career he has served as a Lecturer in Medical Physics at Leeds University, a Physics Examiner for the Royal College of Radiologists Part 1 Clinical Oncology exam and an Associate Editor for the British Journal of Radiology. He has contributed to national and international professional guidance. He was awarded Honorary Membership of the Royal College of Radiologists in 2010 and Fellowship of the Institute of Physics in Engineering and Medicine in 2014. He retired from full time work in 2018 to further pursue his interests of coastal walking, astronomy and drinking red wine