police series The Streets of San Francisco. 23 November – 10th anniversary of the first episode of Doctor Who. Smash Martians advertising campaign launches on ITV. December 17 December – The government announces severe measures to reduce electricity consumption due to the ongoing overtime ban by the National Union of Mineworkers, strike action in the electricity supply industry and effects of the 1973 oil crisis. Part of these measures are that both BBC and ITV television are ordered to end their broadcasting day earlier than usual, at around 10:30pm in order to save energy. The early closedowns commence that day and continue until Sunday 23 December. They are then lifted so that Christmas and New Year programming can air as normal and provide some light relief to the public. The restrictions will be reimposed from Monday 7 January 1974 and remain for a further month. Unknown Three of the five experimental community cable television channels, authorised the previous year by The UK's Minister for Posts and Telecommunications launch. They are Sheffield Cablevision, The Bristol Channel and Swindon Viewpoint. They join Greenwich Cablevision which had launched the previous year. The fifth, Wellingborough Cablevision, begins broadcasting in February 1974. A Hovis bread advert featuring a baker's delivery boy with a bicycle on Gold Hill, Shaftesbury, Dorset, directed by Ridley Scott, is launched on ITV. Debuts BBC1 5 January – Teddy Edward (1973) 7 January – Fish (1973) 9 January – Whatever Happened to the Likely Lads? (1973–1974) 15 January – Alice Through The Looking Glass (1973) 25 January – Whoops Baghdad (1973) 5 February – The Wombles (1973–1975, 1990–1991, 1997–2000) 13 February – The Viaduct (1973) 15 February – Some Mothers Do 'Ave 'Em (1973–1978) 18 February – A Little Princess (1973) 26 February – The Crocodile (1973) 13 March – Lizzie Dripping (1973–1975) 4 April – Barnaby (1973) 25 April – The Gordon Peters Show (1973) 11 May – Scotch on the Rocks (1973) 26 May – That's Life! (1973–1994) 6 June – Son of the Bride (1973) 7 June – Warship (1973–1977) 13 June – We Are the Champions (1973–1995) 16 June – Sutherland's Law (1973–1976) 13 July – Jack the Ripper (1973) 19 July – Centre Play (1973–1978) 20 August – Why Don't You? (1973–1995) 1 September – Moonbase 3 (1973) 12 September – Oh, Father! (1973) 13 September – Casanova '73 (1973) 14 September – The Donati Conspiracy