William Russell Enoch (born 19 November 1924) is an English actor. He achieved prominence in 1956 when he took the title role in the ITV television series The Adventures of Sir Lancelot (1956–1957). In 1963, he became part of the original lead cast of BBC1's Doctor Who, playing the role of schoolteacher Ian Chesterton opposite William Hartnell from the show's first episode until 1965. Russell's film roles include parts in The Man Who Never Was (1956), The Great Escape (1963) and Superman (1978). On television, he notably appeared as Ted Sullivan in Coronation Street in 1992. In recent years, Russell has maintained his association with Doctor Who; he returned to the show in 2022, making a cameo appearance as Ian in "The Power of the Doctor", 57 years after the character's last television appearance. Early life William Russell Enoch was born on 19 November 1924 in Sunderland, County Durham, to Eva Compston (née Pile) and Alfred James Enoch. He was educated at Wolverhampton Grammar School and became interested in acting at an early age. He was involved in organising entertainment during his national service in the Royal Air Force and then, after university, went into repertory theatre. Doctor Who In 1963, Russell was cast in Doctor Who as science teacher Ian Chesterton, the Doctor's first male companion, appearing in most episodes of the first two seasons of the programme. He was one of the four original cast members of Doctor Who, starring opposite William Hartnell as the First Doctor, Jacqueline Hill as Barbara Wright, Carole Ann Ford as Susan Foreman and later Maureen O'Brien as Vicki. His first involvement in the series took the form of the untransmitted pilot episode, which was eventually reshot and broadcast as An Unearthly Child. He eventually departed, alongside Hill, in the penultimate story of the second season, The Chase. He was intended to reprise the role of Ian in the 1983 story Mawdryn Undead alongside Peter Davison as the Fifth Doctor. However, scheduling conflicts made him unavailable. Since leaving Coronation Street in 1992, Russell has maintained his association with Doctor Who, having lent his voice as a narrator to several of the audiobook releases of the lost 1960s episodes. He appeared in The Game, one of the continuing Doctor Who audio stories produced by Big Finish Productions. He has also recorded readings for some of the CD audio adaptations of Doctor Who story novelisations