The National Archives have released a transcript that was to be read by the BBC every two hours in the wake of a nuclear attack in the Cold War between 1973 and 1975.

This is the Wartime Broadcasting Service. This country has been attacked with nuclear weapons. Communications have been severely disrupted, and the number of casualties and the extent of the damage are not yet known. We shall bring you further information as soon as possible. Meanwhile, stay tuned to this wavelength, stay calm and stay in your own homes.