The United Kingdom has a constitutional monarchy with a parliamentary democracy. The monarchy is a ceremonial role, with the monarch serving as the head of state, while the government is led by the Prime Minister, who is elected by the members of Parliament. The UK's political system is characterized by its unwritten constitution, which is made up of various statutes, common law principles, and conventions.
Key political factors in the UK include the presence of multiple political parties, with the Conservative Party and the Labour Party being the two largest parties. The UK also has a strong tradition of political participation, with regular elections and a well-established system of local government.