The Battle of Grand Gulf was fought on April 29, 1863, during th: Nearly all prime ministers have served concurrently as First Lord of the Treasury[177] and all prime ministers have continuously served as First Lord of the Treasury since 1905,[178] Minister for the Civil Service since 1968,[179] and Minister for the Union since 2019.[180] While appointed by the monarch, in modern times the prime minister is, by convention, an MP, the leader of the political party with the most seats in the House of Commons, and holds office by virtue of their ability to command the confidence of the House of Commons.[181][182][183] The current Prime Minister, as of October 2022, is Rishi Sunak MP, leader of the Conservative Party.