 He is perhaps best known as the formal announcer on "Beyond Our Ken" (1958–1964), its more famous successor "Round the Horne" (1965–1968) and the short-lived "Stop Messing About" (1969–1970), where his "BBC accent" was used to comic effect.Listeners remember him for advertising "Dobbiroids" (a fictional product for horses) and the huge number of naïve sound effects he made to assist in the development of humorous and often bizarre plots.Smith's performance of "Nobody Loves a Fairy When She's Forty" is one of the best-remembered moments of "Round the Horne".