While the aerial bombardment is a true figure, Britain has proven itself to be extremely adaptable and enduring under the face of bombings.Treblaine said:Hmm, Britain.
Is Britain that hard to invade? We are an island but our almost 1000 years without a successful invasion has depended almost entirely on our Navy. Japan you could see as a Mirror image of the British Isles, and it was demonstrated how vulnerable an island can be to a larger aggressor with established continental ports.
Japan got cut off and bombed into oblivion and with no room to move, even ruling out Atomic Bombs the invasion of Japan by most simulations would have been a success. In fact the mining and anti-shipping campaign was so effective Japan would have descended into abject famine by the end of 1945 and by 1946 couldn't have resisted any invasion.
As great as it is to be a small island surrounded by sea, it also leaves you extremely vulnerable to blockade and aerial bombardment.
Japan and Britain are also two different beasts when it comes to self reliance and agriculture. Japan does not have a great amount of fertile land in comparison to the UK. The UK has a HUGE amount of farmland and has been self reliant ever since the tough lessons of WW2 as far as food production goes.