Harold Macmillan was from Great Britain.
The United Kingdom of Great Britain and Northern Ireland competed as Great Britain at the 2016 Summer Olympics in Rio de Janeiro , Brazil , from 5 to 21 August 2016 . Maurice Harold Macmillan , 1st Earl of Stockton , ( 10 February 1894 -- 29 December 1986 ) was a British Conservative politician and statesman who served as the Prime Minister of the United Kingdom from 10 January 1957 to 19 October 1963 . The Middle Way is a book on political philosophy written by Harold Macmillan ( British Conservative Party politician and later prime minister of the United Kingdom ) .