The UK has a constitutional monarchy, meaning that whilst The King is the Head of State, he remains politically impartial. The ability to make and pass legislation resides with an elected Parliament.
The Prime Minister is officially appointed by the Sovereign in person. This remains one of the few personal prerogatives of The Sovereign, and their decision is limited by constitutional convention. In order to be appointed, The Prime Minister should have the “ability to command the confidence of the House of Commons, which in turn commands the confidence of the electorate, as expressed through a general election.”
When a potential Prime Minister is called to Buckingham Palace, The Sovereign will ask him or her whether they will form a government in their name. To this question, two responses are realistically possible. The most usual is acceptance.
As Sovereign, The King holds a weekly Audience with the Prime Minister to discuss Government matters. The Monarch remains politically neutral on all matters, but he is able to ‘advise and warn’ his ministers – including his Prime Minister – when necessary. These Audiences are entirely private.
Prime Ministers during The King's reign
Liz Truss, September - October 2022.
Rishi Sunak, October 2022 - July 2024.
Sir Keir Starmer, July 2024 - present.