Eric William Riches, the second child and eldest son of William Riches, a schoolmaster, and of Kate Riches (née Rowbotham), was born on 29 July 1897, at Alford, Lincolnshire. He was educated at St Dunstan's, Alford, and Queen Elizabeth Grammar School, Alford, before securing an entrance scholarship

James Cosbie Ross was born in Liverpool on 17 May 1904. He was the son and grandson of doctors, his father being James Ross, a general practitioner in Walton, Liverpool. His mother was Delia Cosbie and James, as the eldest child, took the name of Cosbie. James used this name and linked Ross as 'Cobb

Stephen Power was born in Reading in 1902 the son of a general practitioner in Stamford Hill in North London. He was educated at St Ignatius College and the London Hospital Medical School, graduating MB, BS in 1925. He was appointed house surgeon and subsequently clinical assistant at the London and