Records of Prime Ministers of the United Kingdom Wilmington to Theresa May) University college with most alumni Prime MinistersChrist Church, Oxford13 (George Grenville to Sir Alec Douglas-Home) Vocational institution with most Prime Ministers as studentsThe Inns of Court11 (Lord Wilmington to Tony Blair). Of these, eight passed through Lincoln's Inn (William Pitt the Younger to Tony Blair). The first Prime Minister never to have been a university graduate was the Duke of Devonshire (served 1756–57), the last (as of ) was John Major (served 1990–97). The earliest Prime Minister to be an armed forces veteran was Henry Pelham, Prime Minister in 1743–54, who had served as a volunteer
Commonwealth Prime Ministers' Conference their respective roles in the overall Allied war effort. Conferences consisted of the prime ministers or presidents of independent states as well as the premiers of some senior colonies. This policy changed with the 1964 Prime Ministers' Conference which was confined to independent states and thus excluded Southern Rhodesia whose prime ministers had attended Imperial and Commonwealth conferences since the 1930s. While the growing number of Commonwealth states was given as the reason for this change, it coincided with the emergence of white minority rule in Rhodesia as a major issue. The 1960s saw an overhaul of the Commonwealth. The