Sir Winston Leonard Spencer Churchill was a British statesman, soldier, and writer who twice served as Prime Minister of the United Kingdom, from 1940 to 1945 during the Second World War, and again from 1951 to 1955. Apart from two years between 1922 and 1924, he was a Member of Parliament (MP) from 1900 to 1964 and represented a total of five constituencies. 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.

Herbert Henry Asquith, 1st Earl of Oxford and Asquith,, generally known as H. H. Asquith, was a British politician and statesman who served as Prime Minister of the United Kingdom from 1908 to 1916. He was the last Liberal Party prime minister to command a majority government, and the most recent Liberal to have served as Leader of the Opposition. He played a major role in the design and passage of major liberal legislation and a reduction of the power of the House of Lords. In August 1914, Asquith took Great Britain and the British Empire into the First World War. During 1915, his government was vigorously attacked for a shortage of munitions and the failure of the Gallipoli Campaign. He formed a coalition government with other parties but failed to satisfy critics, was forced to resign in December 1916 and never regained power.