Prime Minister of the United Kingdom

Definition and stakes

United Kingdom Cabinet Office Cabinet Manual

The Prime Minister is, by tradition, the First Lord of the Treasury (for more information on the Treasury Commissioners and the First Lord of the Treasury see paragraph 3.29) . In his or her capacity as First Lord of the Treasury, the Prime Minister takes oaths of office under the Promissory Oaths Act 1868.2 3.3 The Prime Minister has few statutory functions but will usually take the lead on significant matters of state. The Prime Minister has certain prerogatives, for example recommending the appointment of ministers and determining the membership of Cabinet and Cabinet committees.
Source: Wikisource

Theresa Mary May Prime Minister's resignation speech

Ever since I first stepped through the door behind me as Prime Minister, I have striven to make the United Kingdom a country that works not just for a privileged few, but for everyone.
And to honour the result of the EU referendum. Back in 2016, we gave the British people a choice. Against all predictions, the British people voted to leave the European Union.
Source: Wikisource

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