Lecturer in Medicine, Department of Medicine, University of Cambridge, 1976–83; Director of The Cognitive Research Trust, Cambridge, since 1971; Secretary-General, Supranational Independent Thinking Organisation (SITO), since 1983
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FRCP, FRCS, FRCR
Consultant Radiologist: Royal National Orthopaedic Hospital, 1972–93, and 1997–2002, then Emeritus; St George’s Hospital, 1972–87; London Clinic, 1976–93; King Edward VII Hospital for Officers, 1985–98; part-time consultant, Frimley Park Hospital, 1994–2008