Prime Minister of the United Kingdom

The Prime Minister of the United Kingdom is the head of the United Kingdom government. The Prime Minister (informally abbreviated to PM) and Cabinet (consisting of all the most senior ministers, most of whom are government department heads) are collectively accountable for their policies and actions to the Monarch, to Parliament, to their political party and ultimately to the electorate. The Office is one of the Great Offices of State. The current holder of the office, Theresa May, leader of the Conservative Party, was appointed by the Queen on 13 July 2016.

Question: is the uk prime minister head of state
Answer: yes