Passage: Canterbury Cathedral in Canterbury, Kent, is one of the oldest and most famous Christian structures in England. It forms part of a World Heritage Site. It is the cathedral of the Archbishop of Canterbury, currently Justin Welby, leader of the Church of England and symbolic leader of the worldwide Anglican Communion.  Its formal title is the Cathedral and Metropolitical Church of Christ at Canterbury.

Question: What is the formal title of the cathedral Justin Welby is apart of?
the Cathedral and Metropolitical Church of Christ at Canterbury