Martin trained as a physicist, and worked in medically related developments at the Institute of Cancer Research, a College of The University of London and at The Royal Marsden Hospital, the national specialist cancer hospital. He built and led a multidisciplinary research group developing better ways of imaging and understanding cancer and its treatment, particularly using MRI, with annual funding ~£4M from charitable (particularly Cancer Research UK) and government sources. He has also been jointly responsible for MRI provision within the hospital, and in a range of complex building and equipment projects. He has served as a trustee on a range of trusts, charities and also as a school governor. Now retired he lives in Ashurst Wood.