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 Learning Zone service played out encrypted programming for professions such as medicine and law overnight between 1992 and 1994. In 1997, when the BBC rebranded, The Learning Zone was renamed BBC Learning Zone, became a separate strand of programming in its own right and became independent of BBC Two. The service would begin after BBC Two's closedown and transfer to Pages from Ceefax, with the service beginning at 12.30am until 7.00am (3.00-5.00am Fridays and Saturdays). In 2004 the service started at 2am every day and continuing until approximately 6am when programming on BBC Two would begin, however this was not always the