The diocese covers the City and County of Swansea and the ancient counties of Brecknockshire and Radnorshire. The diocesan cathedral is the Cathedral Church of Saint John the Evangelist in the town of Brecon, which has been a parish church since the Reformation, becoming elevated to cathedral status in 1923. The diocese is administered from Brecon, with an additional office in Swansea.
The Bishop's residence is Ely Tower, Brecon. The office was created in 1923 at the founding of the diocese, an area stretching south to the coast of Gower and north into much of mid-Wales. Immediately prior to the diocese's erection, the first bishop, Edward Bevan, had served as Bishop of Swansea, a suffragan in the Diocese of St Davids.
On 29 January 2008, John Davies, Dean of Brecon Cathedral was elected Bishop. The election followed the retirement of Anthony Pierce on 16 January; Pierce had served as bishop of the diocese from 1999. Davies was consecrated by the Archbishop of Wales Dr Barry Morgan in Llandaff Cathedral on 2 May 2008 and, on 24 May was enthroned at Brecon Cathedral as the ninth Bishop of Swansea and Brecon.
List of the Bishops of the Diocese of Swansea and Brecon
|Bishops of Swansea and Brecon|
|1923||1934||Edward Bevan||Previously suffragan/assistant Bishop of Swansea (Diocese of St Davids)|
|2008||incumbent||John Davies||Archbishop of Wales since September 2017|
- "The Diocese of Swansea and Brecon". Church in Wales. Retrieved 6 January 2019.
- E. B. Pryde; D. E. Greenway; S. Porter; I. Roy (23 February 1996). Handbook of British Chronology. Cambridge University Press. p. 290. ISBN 978-0-521-56350-5.
- Welsh icons (Archived 24 February 2012; accessed 7 October 2017)
- The Living Church. Morehouse-Gorham Company. 1958. p. 15.
- "Historical successions: Swansea and Brecon". Crockford's Clerical Directory. Retrieved 22 July 2012.
- Whitaker's Almanack to 2004, Joseph Whitaker and Sons Ltd/A&C Black, London