The Coronation Oath of Elizabeth II sets out the Crown’s duties towards the subject:
(1) to govern the peoples of the United Kingdom of Great Britain and Northern Ireland, and the dominions etc belonging or pertaining to them according to their respective laws and customs;
(2) to cause law and justice in mercy to be executed in all judgments, to the monarch’s power;
(3) to maintain the laws of god, the true profession of the Gospel, and the protestant reformed religion established by law, to the utmost of the Sovereign’s power;
(4) to maintain and preserve inviolable the settlement of the Church of England, and its doctrine, worship, discipline and government as by law established in England; and
(5) to preserve unto the bishops and clergy of England, and to the Churches there committed to their charge, all such rights and privileges as by law do or shall appertain to them or any of them.