In what year did the monarch Theresa may is "collectively accountable" to ascend to the throne?
Prime Minister of the United Kingdom The Prime Minister of the United Kingdom is the head of Her Majesty's Government in the United Kingdom. The Prime Minister (sometimes 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 of the office, Theresa May, leader of the Conservative Party, was appointed by the Queen on 13 July 2016.
Prime Minister of Northern Ireland The Prime Minister of Northern Ireland was the head of the Government of Northern Ireland between 1921 and 1972. No such office was provided for in the Government of Ireland Act 1920, however the Lord Lieutenant, as with Governors-General in other Westminster Systems such as in Canada, chose to appoint someone to head the executive even though no such post existed in statute law. The office-holder assumed the title "Prime Minister" to draw parallels with the Prime Minister of the United Kingdom. On the advice of the new Prime Minister, the Lord Lieutenant then created the "Department of the Prime Minister". The office of Prime Minister of Northern Ireland was abolished in 1972, along with the contemporary government, when direct rule of Northern Ireland was transferred to London.