The UK was saved in WWII by Operation Barbarossa, not Churchill. The sacrifices of the people of the USSR were very great, and they saved our bacon. Not much thanks did they get for it afterwards though. Had it not been for Operation Barbarossa, and to a lesser extent Pearl Harbour, both actions of the Axis powers, we would have been overwhelmed. And it would have been Churchill's fault for not listening to Chamberlain, who understood our weakness and wanted peace.