BBC Television renamed BBC1 in 1964, after the launch of BBC2 (now BBC Two), the third television station (ITV was the second) for the UK; its remit, to provide more niche programming. The channel was due to launch on 20 April 1964, but was put off the air by a massive power failure that affected much of London, caused by a fire at Battersea Power Station. A videotape made on the opening night was rediscovered in 2003 by a BBC technician. In the end the launch went ahead the following night, hosted by Denis Tuohy holding a candle. BBC2 was the first
BBC Choice and Two programming as well as original programming such as "Backstage", which took viewers on a tour of the BBC every episode. The channel also provided exclusive coverage of music festivals such as Glastonbury and extended live coverage of sport, for when either BBC One or Two have to end their coverage early or their schedules are unable to provide live sport action. BBC Choice also introduced an innovative programme format known as 'Hotlink', which expanded on popular shows. Examples included "Watchdog Extra", where viewers could contact the show by phone or e-mail with either questions or feedback on the