Quote Originally Posted by Franconicus
A mass invasion by sea however, may not have been necessary. In British wartime cabinet documents released in 1998, it was revealed that after the failure of the British Expeditionary Force in France and its evacuation at Dunkirk, Winston Churchill had lost support in the cabinet and in Parliament. Had the Royal Air Force been defeated by the Luftwaffe, Churchill may have been replaced as Prime Minister by Foreign Secretary Lord Halifax, who was believed to be in favour of peace negotiations with Germany rather than face a civilian bloodbath on British soil.
Wartime Britain traditionally demands a coalition government, and the Labour party and a large part of the Conservatives wouldn't have stomached Halifax or any other defeatist Tory forming a government. Halifax would have faced and lost a vote of No Confidence as soon as he took office.