Julian Wyatt Glover was born on March 27, 1935 in Hampstead, London, England, to Honor Ellen Morgan (Wyatt), a BBC journalist, and Claude Gordon Glover, a BBC radio producer. Glover's guest appearances on television include series such as The Avengers (1961), Doctor Who (1963), Space: 1999(1975), Blake's 7 (1978), Remington Steele (1982) and Merlin (2008). He also played the recurring role of Grand Master Pycelle on 31 episodes of the HBO fantasy series Game of Thrones (2011).
During the 1980s, Glover appeared in Star Wars: Episode V - The Empire Strikes Back (1980), For Your Eyes Only (1981), The Fourth Protocol (1987) and Indiana Jones and the Last Crusade (1989). In the film version of Harry Potter and the Chamber of Secrets (2002), he provided the voice of the giant spider Aragog.