Although only a simulation, the text of the Queen's address - supposedly broadcast at noon on Friday March 4 1983 - seeks to prepare the country for World War III.
There are references to the Queen's "beloved son Andrew", serving with his unit as a Royal Navy helicopter pilot and the address by her father George VI on the outbreak of the World War II.
"Now this madness of war is once more spreading through the world and our brave country must again prepare itself to survive against great odds," it reads.
More top news
The number of terminal cancer patients who die in hospital rather than at home is placing "unnecessary strain" on the NHS, a report says.
Half of police forces in England and Wales do not have the capability and resources to tackle corruption among officers, a new report says.
There is a snow and ice warning in force for much of the UK tomorrow, but temperatures will be slightly higher than today.