Harold Wilson Harold Wilson James Harold Wilson, Baron Wilson of Rievaulx, (11 March 1916– 24 May 1995) was a British Labour politician who served as Prime Minister of the United Kingdom from 1964 to 1970 and 1974 to 1976. Entering Parliament in 1945, Wilson was appointed a parliamentary secretary in the Attlee ministry and rose quickly through the ministerial ranks; he became Secretary for Overseas Trade in 1947 and was elevated to Cabinet shortly thereafter as President of the Board of Trade. In opposition to the next Conservative government, he served as Shadow Chancellor (19551961) and Shadow Foreign Secretary (19611963). Hugh Gaitskell,
Prime minister and in British colonial territories as they developed self-government. In some places alternative titles such as "premier", "chief minister", "first minister of state", "president of the council" or "chancellor" were adopted, but the essentials of the office were the same. By the late 20th century, the majority of the world's countries had a prime minister or equivalent minister, holding office under either a constitutional monarchy or a ceremonial president. The main exceptions to this system have been the United States and the presidential republics in Latin America modelled on the U.S. system, in which the president directly exercises executive authority.