Malcolm Sperrin is the director of the Department of Medical Physics and Clinical Engineering at the Churchill Hospital, UK, with a special interest in radiation medicine, especially nuclear medicine and radiotherapy. He also plays a significant role in radiation protection and contingency planning. In parallel to his conventional hospital duties, Malcolm also spends a lot of time teaching and lecturing with organisations including Oxford Postgraduate Medical School, The Open University and various Royal Colleges not to mention lectureships at Guildford and the University of the West of England. He is also a Fellow of both the Royal College of Surgeons and the Royal College of Radiologists.

John Winder worked at The University of Ulster from 2002 until 2017 as a reader in healthcare science, as a lecturer and researcher. His research interests are in 3D medical imaging, rapid prototyping (3D printing) and he has published more than 100 research papers and 7 book chapters, as well as supervised 11 PhD students. He is known for his clear communication of science and has been guest speaker at a range of UK radiology and other clinical conferences. John is now self-employed at RJ imaging, Belfast, and works on scientific writing and creating customised anatomical models for the Northern Ireland National Health Service.