William Hamer, son of William, a chartered accountant, and his wife, Alice Marjorie, née Evans, was born in London on 22 July 1919. From Boston Grammar School and Oakham School, Rutland, he went to St Mary's Hospital, London. He held house appointments at the Postgraduate Medical School and was infl

John Holmes Tasker was born in London on 20 January 1917, the son of Dr Ludwig Tasker, a general practitioner, and May, née Gadsden, a registered nurse. He was educated at Epsom College before entering Corpus Christi College, Cambridge, in 1935 with the Haviland exhibition. After completing pre-clin