O.T.T. was a late-night adult version of the anarchic ATV children's show Tiswas, but made by its ITV franchise successor Central Independent Television. It was broadcast at 11.00pm on Saturday nights for one series in 1982. It was created and presented by Chris Tarrant, and also starred ex-Tiswasians John Gorman, Lenny Henry and Bob Carolgees. Helen Atkinson-Wood was the female sidekick replacement for Sally James, who stayed behind to present the concurrent and final series of Tiswas alone.

Tiswas was a Saturday morning children's British television series which ran from 5 January 1974 to 3 April 1982 and was produced for the ITV network by ATV Network Limited. It was created by ATV continuity announcer Peter Tomlinson following a test period in 1973 when he tried out a few competitions and daft stuff between the programmes.

Based on Roger McGough's PC Plod poems, a series of quick comic sketches performed by The Scaffold.