N. F. Simpson which no episodes survive. His final series for television was the unsuccessful "Charley’s Grants" (1970), co-written with John Fortune and John Wells, starring Hattie Jacques, and produced by Ian MacNaughton (who produced "Monty Python’s Flying Circus"), which is also entirely lost. Plays followed, including a satire on advertising, "Thank You Very Much" (1971), and an effective three-hander for ITV, "Silver Wedding" (1974), directed by Mike Newell. Simpson’s highest-profile production for television was "Elementary, My Dear Watson" (1973), a Sherlock Holmes parody for BBC One’s "Comedy Playhouse" starring John Cleese and Willie Rushton. It has been screened several times at the
Chicken Man (theme tune) replaced by a re-recorded version from 1988-1989. After being replaced by a completely different theme tune, it made a reappearance in the final series of "Grange Hill" in 2008. An entirely different arrangement of "Chicken Man" was also used as the theme to early series of the British quiz show "Give Us a Clue", despite the fact that it was already being used on "Grange Hill". It lasted as the theme tune from 1979 until 1982, when a new producer/director commissioned an entirely new theme tune. Most recently, the tune has been used as a jingle for the El Árbol