Principal area of wales
county or county borough of Wales administered by a principal council
Gwynedd
City and County of Swansea
City of Newport
Powys
Monmouthshire
Pembrokeshire
Ceredigion
Carmarthenshire
City and County of Cardiff
Isle of Anglesey
Flintshire
Denbighshire
Caerphilly County Borough
Neath Port Talbot County Borough
Conwy County Borough
Wrexham County Borough
Vale of Glamorgan