But if they hadn't surrendered, at least the UK wouldn't have actively attacked them.I doubt the French populace would enjoy a rerun of 1870-71, or getting suborned into the UK. France, whatever the incarnation in WWII, was not exactly happy with the UK.
As to my choice, I think I'd choose FDR if I had to live in the times - he seems to have the least unsavoury opinions by our current standards.
But favourite as in also most interesting is probably Churchill. (In hindsight) the most obvious British failure of WW1 recasts himself as the saviour of Britain and then, though losing the election at the end of the war, still makes another comeback later.