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
John Cleese most disgracefully immoral people I've ever come across in a Western civilisation". In 1992, the UK Health Education Authority (subsequently the Health Development Agency, now merged into the National Institute for Health and Care Excellence) recruited Cleese—an ex-smoker—to star in a series of anti-smoking public service announcements (PSAs) on British television, which took the form of sketches rife with morbid humor about smoking and were designed to encourage adult smokers to quit. In a controlled study of regions of central and northern England, one region received no intervention, the PSAs were broadcast in two regions, and one region received both