List of Catholic dioceses in Great Britain

The Diocese of Westminster is considered the mother church of English and Welsh Catholics,[1] and although not formally a primate, the Archbishop of Westminster is usually elected President of the Catholic Bishops' Conference of England and Wales, providing a degree of a formal direction for the other English bishops and archbishops.

From the time of the English Reformation in the 16th century, with Catholicism being declared illegal, there were no Catholic dioceses in England and Wales.

The Catholic Church in Scotland comprises two Latin ecclesiastical provinces each headed by a Metropolitan archbishop.

There is an Apostolic Nunciature to Great Britain which is the institutional papal diplomatic representation at full embassy level to the British authorities.

The "ambassador", who in fact carries the centuries-old title of "nuncio", has relations with the government of the United Kingdom, and in a different mode with the Catholic bishops of England, Wales and Scotland.