Medawar was professor of zoology at the University of Birmingham (1947–51) and University College London (1951–62). In 1962 he was appointed director of the National Institute for Medical Research, and became professor of experimental medicine at the Royal Institution (1977–83), and president of the Royal Postgraduate Medical School (1981–87). Medawar was a scientist of great inventiveness who was interested in many other subjects including opera, philosophy and cricket. 