Tiswas ("Today Is Saturday Watch And Smile") 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 (later to become a regular presenter on the show) following a test period in 1973 when he tried out a few competitions and daft stuff between the programmes.