What is the main function of the Prime Minister?

The main function of the Prime Minister is to lead the government and make policy decisions. In the UK, the Prime Minister serves as the head of the government, setting the direction for government policy and decision-making. This role includes deciding on legislative priorities, shaping domestic and international policy, and managing the workings of government departments.

The Prime Minister also represents the government in Parliament, where they must defend and promote their policies, engage with opposition parties, and answer questions from Members of Parliament. They play a crucial role in managing the cabinet, coordinating the work of ministers, and determining the government's overall strategy.

Serving as the head of state is not a role filled by the Prime Minister; that position is primarily held by the monarch. The Prime Minister does represent the UK internationally, but this is part of the broader responsibilities that include policy leadership. Lastly, overseeing the judiciary is not a function of the Prime Minister, as the judiciary operates independently of the government, ensuring a separation of powers within the state.