[1] Crediton was chosen as the site for its cathedral, possibly due it having been the birthplace of Saint Boniface and also the existence of a monastery there.

[2] In 1046, Leofric became the Bishop of Crediton: following his appointment he decided that the see should be moved to the larger, more culturally significant and defensible walled town of Exeter.

The provincial episcopal visitor (for parishes in this diocese – among twelve others in the western part of the Province of Canterbury – which do not accept the ordination of women as priests, since 1994) is the Bishop suffragan of Oswestry (for traditional Anglo-Catholics), and Rod Thomas, Bishop of Maidstone (for Conservative Evangelicals); they are licensed as honorary assistant bishops in the diocese.

The Bishop suffragan of Crediton generally oversees the Archdeaconries of Barnstaple and Exeter and the Bishop suffragan of Plymouth the Archdeaconries of Plymouth and Totnes.

The following mergers of deaneries have taken place: *including Cathedral The arms of the diocese are Gules two keys in saltire Or a sword hilt downwards in pale Argent with hilt Or surmounted by a mitre.