William Leo Franklyn (22 September 1925 - 31 October 2006) was a British actor, perhaps best known for voicing the "Schhh... You Know Who" adverts for Schweppes from 1965 to 1973. He also performed on the stage, on film, on televisions, and on radio, taking over from Peter Jones as "The Book" (the narrator) in the third, fourth and fifth radio series of The Hitchhiker's Guide to the Galaxy.
Debonair British actor at home on stage (since the age of 15), screen and TV. Initially, his roles tended to be dramatic but, by his 40s, he was increasingly playing tongue-in-cheek comedy parts. His smooth lounge-lizard voice has frequently been used for voice-overs on television advertisements (most famously a long-running campaign for Schweppes drinks) and TV trailers.
