 His career had spanned the years during which neuropathology began to be recognised as a specialty, rather than as merely applied neurology or psychiatry, and he was one of the first to regard himself as a neuropathologist.By the time he retired from Queen Square in 1949 the advent of the National Health Service had seen the establishment of neurosurgical centres throughout the country, many with neuropathologists already in post.In 1950 with a group of senior colleagues Greenfield started the Neuropathological Club, with 28 founder members.