Extract from 1973 HM Treasury document concerning post-attack monetary policy. For obvious reasons, Item 6 didn't make the final brief. ...(d) a total nuclear attack employing high power missiles which would destroy all but a small percentage of the UK population and almost all physical assets or civilised life... ...As for (d), the money policy would of course be absurdly unrealistic for the few surviving administrators and politicians as they struggled to organise food and shleter for the tiny bands of surviving able-bodied and the probably larger number of sick and dying. Most of the other departments contingency planning might also be irrelevant in such a situation. Within a fairly short time the survivors would evacuate the UK and try to find some sort of life in less-effected countries (southern Ireland?).