In 1707, the Parliament of England was merged with the Parliament of Scotland to form the Parliament of Great Britain. Following the Acts of Union in 1800, which united Great Britain with Ireland, the Parliament of the United Kingdom of Great Britain and Ireland was created. This body, now known simply as the Parliament of the United Kingdom, has served as the central legislative body of the UK government ever since.
In addition to the Parliament, the UK government includes the Prime Minister, the Cabinet, and the Civil Service. The Prime Minister, who is the head of government, is appointed by the monarch and serves as the leader of the majority party in the House of Commons. The Cabinet, which is made up of senior government ministers, is responsible for setting government policy and making decisions. The Civil Service, which is a body of non-political civil servants, is responsible for implementing government policy and delivering public services.
In summary, the UK government is a complex institution with a long history dating back to the 12th century. It consists of the Parliament, the Prime Minister, the Cabinet, and the Civil Service, and it is responsible for setting government policy, making decisions, and delivering public services.