Each episode featured a mixture of sketches, some prophesying his later television dramas such as the quasi-soap, Streets Ahead, Life and Times in NW1, (about an upwardly mobile Camden couple) and more unexpectedly, serious poetry and music slots incorporating readings by Michael Hordern and Prunella Scales with archive footage of music-hall stars. This personalised nostalgic element distinguished On the Margin from other contemporary sketch shows, with Bennett's satirical swipes at Britain, integrated with his genuine love of its cultural heritage.
It was directed by Sydney Lotterby, produced by Patrick Garland and was broadcast between 9 November and 14 December 1966 on BBC 2. It was repeated twice in 1967, but the tapes were wiped in the 1970s so the main surviving evidence of the series are the scripts. However, a compilation CD of audio extracts was released in 2009. The series was cited by John Cleese as an influence on Monty Python's Flying Circus.