Christ Church, formally titled "The Dean, Chapter and Students of the Cathedral Church of Christ in Oxford of the Foundation of King Henry the Eighth", is the only college in the world which is also a cathedral, the seat (cathedra) of the Bishop of Oxford. The Visitor of Christ Church is the reigning British sovereign, and the Bishop of Oxford is unique among English bishops in not being the Visitor of his own cathedral.The head of the college is the Dean of Christ Church, who is a clergyman appointed by the crown as dean of the cathedral church. There is a senior and a junior censor (formally titled the Censor Moralis Philosphiĉ and the Censor Naturalis Philosophiĉ) the former of whom is responsible for academic matters, the latter for undergraduate discipline. A Censor Theologiĉ is also appointed to act as the Dean's deputy.The form "Christ Church College" is considered incorrect, in part because it ignores the cathedral, an integral part of the unique dual foundation.