Anthony Stewart Head Anthony Stewart Head is a British actor and musician . Born in London , Head is best known for his roles in the Gold Blend / Taster ' s Choice adverts in the 1980s , and as in . For " Star Trek " , Head narrated the audiobooks of " The Valiant " and " The Rise and Fall of Khan Noonien Singh , Volume One " . Head auditioned for the role of Benjamin Sisko in . Educated at the London Academy of Music and Dramatic Arts , Head began his career on stage ; his extensive theater work has included " Joseph and the Amazing Technicolor Dreamcoat " , " Godspell " , " Chess " , " The Pirates of Penzance " , and appearing as Dr . Frank N Furter in the London revival of . His television career began in 1979 with an appearance in the ITV series " Enemy at the Door " . Following the success of the Taster ' s Choice adverts , Head began to look for more work in the United States . In 1995 , Head appeared in the shortlived American drama series " VR - 5 " . It was this role , plus his stage work , that led to his winning the part of Rupert Giles in 1997 . Appearing in " Buffy " alongside Head were – amongst others – Armin Shimerman , Harry Groener , Mark Metcalf , Robin Sachs , Brian Thompson , James Marsters , Jeff Kober , Harris Yulin , Joel Grey , Vincent Schiavelli , Dominic Keating , Jeff Ricketts , Jeff Pruitt , James G . MacDonald , Conor O ' Farrell , Kelly Connell , Brian Reddy , Bonita Friedericy , and Spice Williams - Crosby . Stunt performers included Scott Workman , Edward Conna , Mark Wagner , Michael Hugghins , Christopher Leps , Brian Hite , Mike Gunther , Kevin Derr , Ben Jensen , Todd Bryant , Bret Davidson , Henry Kingi Jr . , John Dixon , Robert Alonzo , Noby Arden , Brian Avery , Ron Balicki , Greg Barnett , Chuck Borden , and many others . Crew members included James A . Contner , Todd McIntosh , Joel Harlow , Steven E . Anderson , Jeff Smolek , Tom Keefer , Russell McElhatton , Kenneth Estes , , and George Santo Pietro . Head chose to step down from his regular role on the series with its sixth season – having lived in America since the series began , he wanted to return to the UK to spend more time with his family . He made several subsequent guest appearances in the sixth and seventh seasons . 2002 saw Head make guest appearances on the Disney cartoon ( with Michael Welch , Steven Weber , and Brian George ) and the UK series " Spooks " and " Silent Witness " , as well as take a lead role in the BBC series " Manchild " . In that same year , he released his first album , " Music for Elevators " , in collaboration with George Sarah . The following year , he began to appear in the comedy series , playing the role of the British Prime Minister . In 2006 , Head appeared in the second season of the revived , a series which also featured Simon Pegg . Head also took over from Pegg as the narrator of the connected documentary series , a role he continued with until 2010 . Head has also featured in numerous audio productions of the series from . Head ' s most recent work has included the central character of Maurice in the BBC series " The Invisibles " , and Uther Pendragon in " Merlin " . Head currently lives in Somerset with his partner and their two daughters .