This is the horrifying script the BBC was planning to broadcast to the nation in the event of a nuclear attack on the country, back in the '70s. If your radio or TV still worked, and if your ears hadn't been melted off your head, this is what you would've heard:
The full PDF of the speech is available on the BBC's site and makes for terrifying reading, particularly so if you're old enough to remember the late '70s and early '80s, when it felt as if the UK's media was preparing us for an imminent nuclear war. Here's a brief snippet:
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.
Remember there is nothing to be gained by trying to get away. By leaving your homes you could be exposing yourselves to greater danger.
Do not, in any circumstances, go outside the house. Radioactive fall-out can kill. You cannot see it or feel it, but it is there. If you go outside, you will bring danger to your family and you may die. Stay in your fall-out room until you are told it is safe to come out or you hear the "all clear" on the sirens.
Image credit: Legendary BBC nuke apocalypse documentary Threads