Career
His first role was in the musical Godspell; this led to roles in television on both BBC and ITV, one of his earliest being an appearance in the series Enemy at the Door (ITV, 1978–1980). In the early 1980s he sang with the band Red Box. In the late 1980s, he appeared in a storyline series of twelve coffee commercials with Sharon Maughan for Nescafé Gold Blend. The soap opera nature of the commercials brought him wider recognition, along with a part in the Children's ITV comedy drama Woof!
Head played Frank N. Furter in the 1990–91 West End revival of The Rocky Horror Show at London's Piccadilly Theatre, with Craig Ferguson as Brad Majors. In 1991 Head's rendition of "Sweet Transvestite" was released as a single by Chrysalis Records. Head played the role again in the summer of 1995 at London's Duke of York's Theatre, a 3 May 2006 tribute show at London's Royal Court Theatre, and a 14 October 2000 production at the Hard Rock Hotel and Casino, Las Vegas, Nevada.
Success on the stage and a number of brief appearances on American television, such as in the short-lived VR.5, led to accepting the role of Rupert Giles in Buffy the Vampire Slayer in 1997.
In 2002, he co-starred in the BBC Two television series Manchild, a show centred around four friends approaching their fifties who try to recapture their fading youth and vitality while dealing with life as 'mature' men. In early 2006, he appeared in an episode of Hotel Babylon. In July he appeared as Captain Hookat the Children's Party at the Palace, a live pantomime staged in the grounds of Buckingham Palace as part of Queen Elizabeth II's 80th birthday celebrations. In October 2006, he voiced Ponsonby, leader of MI6, in Destroy All Humans! 2.
In 2007, he portrayed Stockard Channing's gay brother in the English film Sparkle and appeared as Mr Colubrine in the ITV1 comedy drama Sold. Head also appeared as Sir Walter Elliot in Persuasion.
Head has also performed for radio, taking two of the lead roles—arch-villain Mr Gently Benevolent, and his descendant, journalist Jeremy Sourquill—in the BBC Radio 4 comedy series, Bleak Expectations (five series, 2007–12).
Head was part of the regular cast of the BBC drama series Merlin, which derives its title from the mythical wizard of the same name. Head played King Uther Pendragon, the father of Prince Arthur.
Head also provides voice-over work in the Nintendo Wii video game, Flip's Twisted World, developed by Frozen North Productions.