Who was the British Prime Minister during World War II?

Winston Churchill served as the British Prime Minister during a critical period of World War II, specifically from 1940 to 1945. His leadership is widely recognized for rallying both the British public and military against the Axis powers. Churchill's steadfast resolve and powerful oratory inspired a nation facing the threats posed by Nazi Germany, particularly during the darkest days of the war.

His predecessor, Neville Chamberlain, is known for his policy of appeasement prior to the war, particularly concerning Adolf Hitler and Germany. Clement Attlee succeeded Churchill in 1945, after the war had concluded. Anthony Eden later became Prime Minister in the early 1950s and was involved in post-war issues, but did not serve during the war itself. Thus, Churchill's tenure is most directly associated with the key decisions and leadership moments of World War II, making him the definitive answer to this question.