Hands up if you have heard of John Minton. The League of Gentlemen actor and Sherlock writer Mark Gatiss is a huge fan of the mid 20th-century artist, who was a leading light in London’s Soho in the 1950s. Minton, whom the Daily Mirror described as “gay, generous, successful, popular and a man without financial worries”, took his own life in 1957, aged 39. In a BBC4 documentary that is due to be shown this summer, Gatiss meets key figures including the actor Norman Bowler, who recalls posing for Minton. And a mystery is solved when Spencer Churchill, another former model and bodybuilder, reveals himself to be the subject of a drawing that Gatiss himself owns.