A three-day debate began in the House of Commons that resulted in British prime minister Neville Chamberlain being replaced by Winston Churchill (pictured).

The Norway Debate, sometimes called the Narvik Debate, was a momentous debate in the British House of Commons from 7 to 9 May 1940, during the Second World War. The official title of the debate, as held in the Hansard parliamentary archive, is Conduct of the War. The debate was initiated by an adjournment motion enabling the Commons to freely discuss the progress of the Norwegian campaign. The debate quickly brought to a head widespread dissatisfaction with the conduct of the war by Neville Chamberlain's government.

The House of Commons is the lower house of the Parliament of the United Kingdom. Like the upper house, the House of Lords, it meets in the Palace of Westminster in London, England. The House of Commons is an elected body consisting of 650 members known as members of Parliament (MPs), who are elected to represent constituencies by the first-past-the-post system and hold their seats until Parliament is dissolved.

Arthur Neville Chamberlain was a British politician who served as Prime Minister of the United Kingdom from May 1937 to May 1940 and Leader of the Conservative Party from May 1937 to October 1940. He is best known for his foreign policy of appeasement, and in particular for his signing of the Munich Agreement on 30 September 1938, ceding the German-speaking Sudetenland region of Czechoslovakia to Nazi Germany led by Adolf Hitler. Following the invasion of Poland on 1 September 1939, which marked the beginning of World War II, Chamberlain announced the declaration of war on Germany two days later and led the United Kingdom through the first eight months of the war until his resignation as prime minister on 10 May 1940.

Sir Winston Leonard Spencer Churchill was a British statesman, military officer, and writer who was Prime Minister of the United Kingdom from 1940 to 1945 and again from 1951 to 1955. For some 62 of the years between 1900 and 1964, he was a member of parliament (MP) and represented a total of five constituencies over that time. Ideologically an adherent to economic liberalism and imperialism, he was for most of his career a member of the Conservative Party, which he led from 1940 to 1955. He was a member of the Liberal Party from 1904 to 1924.