The Cathedrals of Greater London for the Church of England fall within the Province of teh see of Canterbury within the Church of England, part of the Anglican Communion.
The dioceses are:
London (ST Pauls Cathedral)
Surrey (Guildford)
SE London (Southwark Cathedral)
E London East of teh lea river and navigation and Essex (Chelmsford Cathedral)
Hertfordshire (St Albans Cathedral)
Bucks and Oxfordshire (Christ Chruch Cathedral, Oxford)
The Roman Catholic Church has Westminster Cathedral for North of the Thames and its own Southwark Cathedral for South of the Thames.
