It is unclear if the Wartime Broadcasting Service is still operational as plans are kept mainly secret with the BBC and government officials.
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.
[1] 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.
With the Cold War having ended, the BBC and British Telecom developed the National Attack Warning System in 2003.
[2] According to a report in the Daily Telegraph, there were suggestions that the warning message would be recorded by Jill Dando, actress Joanna Lumley or Carol Vorderman.
Regular drills and training exercises were held to give an air of realism, but many BBC staff saw them as pointless or declined to serve during a national emergency because they would not be allowed to take their families with them.
One anonymous insider said, "I can't blame them for deciding there were better ways to go than to sit in a bunker with a group of local radio engineers.
"[5] Initially, a post-attack statement was to be broadcast confirming a nuclear strike had hit the United Kingdom and warning of the dangers of fallout.