Roy Butterfield was a GP surgeon in Teignmouth. He was born in Bolton on 26 January 1929, the son of Howard Vincent Butterfield, a cotton yarn executive, and his wife, Edith née Entwistle. He was educated at Gonville and Caius College, Cambridge. He went on to the Westminster Hospital for his clinic

Derek Berg was born in 1926 in Hong Kong, where his father was a shipping broker and Norwegian Consul-General. His Australian mother Constance died of cerebral malaria just before his third birthday, and Derek was sent to live with his aunt in Adelaide. His father remarried and he returned to Hong K