📺 'Rainbow' Monday 16 October 1972 - ITV: 12:05 The first episode of Rainbow saw David Cook was on presenting duties, John Leeson kept warm as the scary-looking Bungle and Peter Hawkins provided the voice of Zippy. N.B. On this day, the first proper daytime television service for the entire day was launched on the ITV network. The restrictions on television broadcasting hours were finally abolished by the Edward Heath government on Wednesday, 19 January 1972. Throughout 1972, the ITV companies