In 1940 you would’ve put money on Hitler invading Britain. He’d smashed his way through Western Europe and there are only 22 miles between Calais and Dover. Britain did what we always do. Turned defeat into victory by positive spin about what happened at Dunkirk.
Why he didn't press ahead is simply beyond me.
Successive governments in the 1930s had made strategic errors on rearming.
England's fortune of not falling to the National socialists, to my mind, is responsible for the deluded English exceptionalism, that the upper and working classes have embraced so wholeheartedly.