Nicholas Briggs (born 29 September 1961) is an English actor, writer, director, sound designer, composer and voice actor. He is predominantly associated with the BBC science fiction television series Doctor Who and its various spin-offs, particularly as the voice of the Daleks and the Cybermen in the 21st century series. He is also the executive producer of Big Finish Productions, for which he has produced, directed and written several audio plays, as well as acting in many of them.