Changes in Ecclesiastical Jurisdictions in Wales 🏴󠁧󠁢󠁷󠁬󠁳󠁿

Date	Change
546	Diocese of Bangor was established
560	Diocese of Llandaff was established
573	Diocese of Saint Asaph was established
600	Diocese of Saint David’s was established
1530	Diocese of Llandaff was suppressed
1558	Diocese of Bangor was suppressed
1558	Diocese of Saint David’s was suppressed
1585	Diocese of Saint Asaph was suppressed
1895.07.04	Apostolic Vicariate of Wales was restored (from Diocese of Newport and Menevia and Diocese of Shrewsbury)
1898.05.12	Apostolic Vicariate of Wales was promoted as Diocese of Menevia (became suffragan of Westminster)
1916.02.07	Metropolitan Archdiocese of Cardiff was restored (from the suppressed Diocese of Newport and with suffragan see Menevia)
1953.11.21	Military Vicariate of Great Britain was established
1957.06.10	Apostolic Exarchate of England and Wales (Ukrainian Rite) was established
1967.03.08	Apostolic Exarchate of England and Wales (Ukrainian Rite) was renamed as Apostolic Exarchate of Great Britain (gained territory of Scotland)
1986.07.21	Military Vicariate of Great Britain was promoted as Military Ordinariate of Bishopric of the Forces in Great Britain
1987.02.12	Metropolitan Archdiocese of Cardiff lost territory to Diocese of Menevia
1987.02.12	Diocese of Wrexham was established (from Diocese of Menevia and became suffragan of Cardiff)
2011.01.15	Personal Ordinariate of Our Lady of Walsingham (Anglican Rite) was established
2013.01.18	Apostolic Exarchate of Great Britain (Ukrainian Rite) was promoted as Diocese of Holy Family of London (without ecclesiastical province)
2016.07.28	Diocese of Great Britain (Syro-Malabar Rite) was established (without ecclesiastical province)
2024.09.12	Metropolitan Archdiocese of Cardiff was renamed as Metropolitan Archdiocese of Cardiff–Menevia (gained territory from the suppressed Diocese of Menevia and lost suffragan see Menevia)
2024.09.12	Diocese of Menevia was suppressed (to Metropolitan Archdiocese of Cardiff–Menevia)