Timbrell Fisher was born at Bristol on 1 November 1887 the second son of Canon W H Fisher. He was educated at Clifton College, Bristol University, and St Bartholomew's Hospital qualifying with the Conjoint Diploma in 1911. He was a house officer at Bristol General Hospital and demonstrator of surgic

Norman Lock was born in Cambridge on 18 March 1885, the son of the Reverend John Bascombe Lock, Fellow and Bursar of Gonville and Caius College, who had previously been for twelve years mathematics master at Eton. He was the third son in a family of four boys and a girl, two of his brothers becoming