BSc Glasg 1967, MB ChB 1969; FRCS Glasg 1973; ChM Manch 1984.
After qualifying, Bancewizc held house positions at the Western Infirmary, Royal Infirmary Glasgow and Southern General Hospital in Glasgow. In 1974 he was research fellow at Harvard Medical School. He returned to Glasgow as a rotating registrar before being appointed lecturer in surgery and honorary senior registrar at the University Department of Surgery, western Infirmary Glasgow. In 1979 Bancewicz was appointed honorary consultant surgeon at Hope Hospital and senior lecturer in surgery at University of Manchester. Bancewicz was a member of the Surgical Research Society, the North of England Gastro-enterology Society, the International Society for Disease of the Oesophagus and Manchester Medical Society .