I know I'm being a bit pedantic but the British flag is called the Union Flag, not the Union Jack. A common mistake.

(It's only called the Union Jack when flown from a ship).

And then specificaly only when flown from the "Jack" mast.

Africa, as a continent is unlikely to have been heavily nuked (bits would obviously but it was never heavily urbanised - urbanised areas make the best targets), because it is gargantuan and the population is pretty spread out. Anyway I think it would be appropriate if Africa, the Cradle of humanity, became the center of a new world order... it fits better than any other continents...

The problem wasnt so much they ran out of missles... They ran out of targets.

I find it amusing how Britain, such a small country, has such big dreams. I mean if Britain is able to do it, why not Finland, for example?

But back to business, I don't think the British navy (or whatever was left of it before the 2 hour war) did survive. Nor did King/Queen.

I'm pretty sure the Royal Navy is long gone. A 5 MT ICBM with MIRV would easily destroy or severely damage a battle fleet. A 5 MT warhead has a 10PSI blast radius of about 3 miles. Spread that out with multiple warheads, and goodbye RN.