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 BBC Two, BBC Four and BBC World News, although viewers in the Republic of Ireland may receive BBC services via overspill from transmitters in Northern Ireland or Wales, or via "deflectors" – transmitters in the Republic which rebroadcast broadcasts from the UK, received off-air, or from digital satellite. Since 1975, the BBC has also provided its TV programmes to the British Forces Broadcasting Service (BFBS), allowing members of UK military serving abroad to watch them on four dedicated TV channels. From 27 March 2013, BFBS will carry versions of BBC One and BBC Two, which will include children's programming from