The Prime Minister
Unlike the American Presidential system, the leader of the UK government, once elected in their constituency, is chosen by members of their own political party to lead. If that party holds the majority of seats in the House of Commons then that individual will assume the title of Prime Minister.
The role of Prime Minister as the head of the UK government is one that has evolved over the years, rather than being created at the outset by the Establishment. Initially, the individual would preside over Cabinet meetings and lead the government with the consent of their peers, but the term was not officially recognised until 1905, with Sir Henry Campbell-Bannerman’s appointment to the position.
Historians generally concur that Sir Robert Walpole can be accredited as the first Prime Minister when he led the parliament for a record-breaking period from 1721 to 1742, although others argue that William Pitt the Younger was the first to really be privy to the title in 1783.
However, surprisingly it was as late as 1916 that a politician assumed the complete title of Prime Minister of the United Kingdom (of Great Britain and Northern Ireland), when Liberal David Lloyd George was elected.
With this in mind, Tory MP Margaret Thatcher holds the record as the longest serving prime minister with the full United Kingdom title to their name, holding the position from 1979 to 1990.
Boris Johnson assumed the position on July 24 2019, after the resignation of Theresa May and a lengthy Tory leadership contest
A list of Prime Ministers from 1902 to the present day:
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