Born at Auckland, New Zealand, 30 September 1875, the eldest child of Henry Charles Choyce, merchant, and Charlotte Milne, his wife. He was educated at the Auckland Grammar School and University, where he graduated BSc in 1896. He left New Zealand early in 1897 and entered the University of Edinburgh. Coming to England as house surgeon to the Leicester Infirmary, he acted afterwards as house surgeon to the Dreadnought Seaman's Hospital at Greenwich in 1902, when William Turner, FRCS was surgeon. In 1905 he was appointed medical superintendent to the hospital in succession to William Johnson Smith, FRCS. Here he was assistant surgeon and teacher of operative surgery from 1907, senior surgeon in 1912, and consulting surgeon on his resignation in 1919. For a part of the time he was dean of the school of clinical medicine. He was also surgeon to in-patients at the Albert Dock Hospital and to outpatients at the Royal Northern Hospital. During the war of 1914-18 he acted for two years as officer in charge of the 19th general hospital, and then served under contract with a commission as lieutenant-colonel, RAMC, dated 12 December 1917, as consulting surgeon to the Egyptian Expeditionary Force, receiving the decorations of CMG and CBE in reward for his services. Upon demobilization in 1919 he was selected to take charge of the newly formed surgical unit at University College Hospital and in this position it was his duty to organize the surgical side of the work both in the hospital and in the medical school. In January 1920 he became a professor of surgery in the University of London. During his period of office the hospital received a large grant from the Rockefeller Trust, and it was chiefly due to the care and forethought of Choyce that so excellent a use was made of the cramped space available for extension. His health began to fail in 1926 and he died in University College Hospital after a prolonged illness on 2 April 1937. He married, 16 April 1903, Gwendolen, daughter of F C Dobbin, J.P. of Chislehurst, Kent. She survived him with a son and a daughter. Choyce was a sound surgeon without fads or fancies, a fair operator, capable rather than attractively skillful, an able teacher of students, and a great lover of children. To his students he was always "Papa Choyce". A sportsman to the end, he was especially interested in rugby football and in cricket. Publications:- A system of surgery. 3 volumes. London, 1912; 3rd ed 1932. This was for some years the standard text-book on surgery. Treves' Surgical applied anatomy. 8th edition London, 1926.