Definitions for "Established church"
the Church of England. Since the breaking away of the English church from Rome under Henry VIII the monarch has been its head and the church has been part of the fabric of the state. Even today the Prime Minister appoints the bishops, a number of whom are in turn entitled to sit in the House of Lords and take part in the law-making process of the state
in England, the Church of England, 'as by law established', the State Church.
the church that is recognized as the official church of a nation