Frank William Law was born in Isleworth, London, on 14 August 1898, the third son of Thomas Law, a drapery warehouseman, and his wife Emma, née MacRae. He was educated at St Paul's School and St John's College, Cambridge, proceeding to the Middlesex Hospital for his clinical studies where he graduat

Edgar Frederick (John) King was born in Midsomer Norton, near Bristol, on 3 December 1899. His father, Edgar James King was in commerce and his mother was Sarah Denning, nee Bird. He was educated at King Edward's School, Bath, and at Bristol University and Medical School. He served as a Second Lieut