How long was Wilson Prime Minister?
Harold Wilson
from 1964 to 1970 and 1974 to 1976
James Harold Wilson, Baron Wilson of Rievaulx, KG,OBE,PC,FRS,FSS (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.