The Wartime Broadcasting Service is a service of the BBC that is intended to broadcast in the United Kingdom either after a nuclear attack or if conventional bombing destroyed regular BBC facilities in a conventional war. It is unclear if the Wartime Broadcasting Service is still operational as plans are kept mainly secretly with the BBC and government officials. According to an article by the BBC, recordings of a nuclear attack warning are still re-recorded and kept up to date periodically. Origins and history The origins of the service lie in pre-World War II plans to disperse BBC staff to facilities such as Wood Norton to guarantee due functioning of the corporation if cities such as London, Belfast, Cardiff, Glasgow and Edinburgh were attacked by the Luftwaffe. In the post-war era, plans were revised so that the Wartime Broadcasting Service would have coped with a nuclear strike by installing 54 low-powered transmitters and keeping (what remained of) the main transmitter network in reserve, in case Soviet bombers used them to home in on targets. Although vague, plans from the mid-1950s were to provide both a national and regional radio service 24 hours a day (mirroring peacetime BBC operations at the time) with the objective of providing "instruction, information and encouragement as far as practical by means of guidance, news and diversion to relieve stress and strain". "Diversion" was to be in the form of music and selected pre-recorded programmes. BBC executives drafted a schedule made up of music, drama, comedy, and religious programmes to be broadcast over a period of 100 days after a nuclear attack on the United Kingdom. The BBC had studios and production equipment at many government nuclear bunkers such as the Central Government War Headquarters at Corsham and the regional seats of government. By the end of the decade, existing transmitters had been fitted with emergency diesel generators and fallout protection. From the 1980s, the BBC planned to broadcast for only a few hours a day and for a few minutes each hour, the intention being to conserve the batteries in domestic radios. There was to be no entertainment content for this reason and so that official messages could get through. With the end of the Cold War, the BBC deactivated the studios and emergency transmitter networks in 1993 as surplus to requirements. Many of these studios have become exhibits in bunkers, like the Kelvedon Hatch