Geoffrey Durham
From Tardis Wiki, the free Doctor Who reference
Geoffrey Durham, (born 22 July 1949) otherwise known as the Great Soprendo, coached Sylvester McCoy in magic for The Greatest Show in the Galaxy. He helped with the sleight-of-hand and other magic trick scenes.
Durham is notable for being the first magic consultant involved in a production of a Doctor Who story since the uncredited contributions of Ali Bongo and Larry Barnes for The Talons of Weng-Chiang.
