James Sebastian Faulkner is an English actor, known for his many various appearance on television and in films, usually in supporting roles.\nFaulkner made his big screen debut as Josef Strauss in The Great Waltz in 1972. He appeared in other films such as Whispering Death, Murder on the Orient Express, played Lt. Teignmouth Melvill in Zulu Dawn that he co-produced, and appeared as Uncle Geoffrey in both Bridget Jones films. He played Herod Agrippa in the BBC's 1976 television adaptation of I, Claudius and portrayed Aldous Huxley in 1981's Priest of Love.\nIn 1988 he portrayed one of the biggest enemies of Sherlock Holmes, Stapleton in Granada Television's production of The Hound of the Baskervilles, opposite Jeremy Brett. In 1991, he played Alex Mair, the manager of the Larksoken nuclear power plant, in an Anglia production of the P.D. James novel featuring her character Inspector Adam Dalgleish, Devices and Desires. He has also portrayed Agent Smith in the film Hitman. He was also the principal antagonist Baron Mullins in the short-lived Anglo-American television show, Covington Cross. He voiced Severus Snape in the video game version of Harry Potter and the Half-Blood Prince.