[Note 2]: In 2019 changes to the boundaries of the Abertawe Bro Morgannwg and Cwm Taf Local Health Boards led to the creation of Swansea Bay and Cwm Taf Morgannwg.
[Nodyn 2]: Yn 2019 arweiniodd newidiadau i ffiniau Byrddau Iechyd Lleol Abertawe Bro Morgannwg a Chwm Taf at greu Bae Abertawe a Chwm Taf Morgannwg.