Born in Eastbourne on 27 September 1908 to D G Gilbert, Headmaster of Roborough School, Eastbourne, Gilbert attended his father's school and then went to St Bartholomew's Hospital where he qualified with the conjoint examination in 1932 and became house surgeon to Girling Ball and Blundell Bankart.

Robert Gerrett Reid, the son of the Rev Dr James Reid, DD, a Presbyterian Minister and well-known preacher, and of Isa Reid (née Gerrett), a school mistress, was born at Oban, Scotland, on 21 September 1909. He was educated at Roborough School, Eastbourne, the Leys School, Cambridge, and Guy's Hospi