Sir Winston Churchill, the British statesman, soldier, and writer who served as Prime Minister of the United Kingdom during the Second World War, died on 24 January 1965, aged 90. His was the first state funeral in the United Kingdom for a non-member of the royal family since Edward Carson's in 1935. It was the last state funeral until Queen Elizabeth II's on 19 September 2022. The official funeral lasted for four days. Planning for the funeral, known as Operation Hope Not, began after Churchill's stroke in 1953 while in his second term as prime minister. After several revisions due to Churchill's continued survival, the plan was issued on 26 January 1965, two days after his death.

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.