Whistle Test

Himself - Presenter / ... (18 episodes, 1972-1979)

Herself - Presenter (14 episodes, 1978-1982)

The series was commissioned by David Attenborough during his time as a BBC executive, although Attenborough has admitted he never actually watched it as he doesn't like rock music.

The title derives its name from the notion that if the grey-haired doorman whistles your tune, then it's a hit.