William James Field (22 May 1909 – 11 October 2002) was a British politician whose career was ended by a conviction for "importuning for immoral purposes" in 1953.
He was educated at Richmond County School, then attended the University of London where he took an active part in student politics, opposing appeasement of Germany.
He improved his majority against the national trend in the 1950 general election, and was appointed as Parliamentary Private Secretary to Michael Stewart and John Strachey.
The officer arrested him for "importuning for immoral purposes", an offence which meant seeking out homosexual partners.
He immediately appealed, with his defence led by the Conservative MP John Maude who was reported to have given his services free.