The United Kingdom has a constitutional monarchy government with Queen Elizabeth II as head of state. The Prime Minister is the head of government, and executive power is exercised by the government with the monarch's consent. Legislative power is held by the UK Parliament which consists of the House of Commons and House of Lords, as well as by the devolved governments in Scotland, Wales, and Northern Ireland which have their own regional assemblies. The judiciary is independent of the other branches of government, and the highest court is the Supreme Court of the UK.