| Name | Locality | Local Authority | Administrative area |
| Cw Rt-yr-ysgol | Treherbert | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwarelau Road | Newton | County of Herefordshire | County of Herefordshire |
| Cwlach Road | Llandudno | Conwy / Conwy | Conwy / Conwy |
| Cwlach Street | Llandudno | Conwy / Conwy | Conwy / Conwy |
| Cwlwm Cariad | Barry | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwlyn | Bethesda | Gwynedd / Gwynedd | Gwynedd / Gwynedd |
| Cwm Alarch | Mountain Ash | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwm Alarch Close | Mountain Ash | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwm Arian | Morriston | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Arthur | Denbigh | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwm Aur | Llanilar | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwm Barry Way | Barry | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwm Bath Road | Morriston | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Braenar | Pontllanfraith | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwm Cadle | Penderry | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Cadno | Margam | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwm Catti | Llanddarog | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwm Cerdin | Ogmore Valley | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwm Chapel Road | Bonymaen | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Ciddy Lane | Rhoose | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwm Ciddy Lane | Barry | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwm Close | Argoed | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwm Clyd | Cockett | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Coed | Garw Valley | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwm Cottage Road | Abertillery | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwm Crawnon Road | Llangynidr | Powys / Powys | Powys / Powys |
| Cwm Cwddy Drive | Graig | Casnewydd / Newport | Casnewydd / Newport |
| Cwm Darran Place | Darran Valley | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwm Du Close | Cockett | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Dylan Close | Graig | Casnewydd / Newport | Casnewydd / Newport |
| Cwm Eithin | Denbigh | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwm Eithin | Nelson | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwm Eithin | Acton | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwm Eithion | Flint | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwm Estyn | Conwy | Conwy / Conwy | Conwy / Conwy |
| Cwm Farm Lane | Pontymoile | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwm Farm Lane | Abertillery | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwm Farm Road | Abertillery | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwm Farteg | Bryn | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwm Fedw | Bedwas, Trethomas and Machen | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwm Felin | Ogmore Valley | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwm Felin Road | Betws | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwm Ffoes | Cefn Cribwr | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwm Glas Park Street | Rhosllanerchrugog | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwm Gwennol | St. Mary Out Liberty | Sir Benfro / Pembrokeshire | Sir Benfro / Pembrokeshire |
| Cwm Gwynlais | Tongwynlais | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwm Hir | Beaufort | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwm Howard Lane | Llandudno | Conwy / Conwy | Conwy / Conwy |
| Cwm Hyfryd | Tonyrefail | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwm Ifor | New Quay | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwm Isaac | Rhigos | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwm Lane | Welshpool | Powys / Powys | Powys / Powys |
| Cwm Lane | Castle Caereinion | Powys / Powys | Powys / Powys |
| Cwm Lane | Rogerstone | Casnewydd / Newport | Casnewydd / Newport |
| Cwm Level Road | Mynyddbach | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Level Road | Landore | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Llanfair | Newtown and Llanllwchaiarn | Powys / Powys | Powys / Powys |
| Cwm Llewenni | Denbigh | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwm Mwyn | Gorslas | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwm Nant | Neath | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwm Nant-llwyd Road | Cilybebyll | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwm Nofydd | Rhiwbina | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwm Parc | Barry | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwm Place | Llandudno | Conwy / Conwy | Conwy / Conwy |
| Cwm Road | Landore | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Road | Castle | Abertawe / Swansea | Abertawe / Swansea |
| Cwm Road | Penmaenmawr | Conwy / Conwy | Conwy / Conwy |
| Cwm Road | Llandudno | Conwy / Conwy | Conwy / Conwy |
| Cwm Road | Llanfoist Fawr | Sir Fynwy / Monmouthshire | Sir Fynwy / Monmouthshire |
| Cwm Road | Llanbadoc | Sir Fynwy / Monmouthshire | Sir Fynwy / Monmouthshire |
| Cwm Road | Argoed | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwm Road | Bargoed | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwm Road | Abbey Dore | County of Herefordshire | County of Herefordshire |
| Cwm Road | Cwm | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwm Road | Dyserth | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwm Road | Penmaenmawr | Conwy / Conwy | Conwy / Conwy |
| Cwm Road | Cwm | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwm Road | Cwm | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwm Silyn | Caernarfon | Gwynedd / Gwynedd | Gwynedd / Gwynedd |
| Cwm Sor Close | New Inn | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwm Stocking | Longtown | County of Herefordshire | County of Herefordshire |
| Cwm Stocking | Walterstone | County of Herefordshire | County of Herefordshire |
| Cwm Tawe Road | Ystradgynlais | Powys / Powys | Powys / Powys |
| Cwm Teg | Old Colwyn | Conwy / Conwy | Conwy / Conwy |
| Cwm Terrace | Llanelli Rural | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwm Terrace | Cwm | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwm Y Dwr | Briton Ferry | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwm-celyn Road | Nantyglo and Blaina | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwm-ffrdd Road | Cwmamman | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwm-halen | New Quay | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwm-yr-wch | Dunvant | Abertawe / Swansea | Abertawe / Swansea |
| Cwm-ystrad Parc | Carmarthen | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmalis Road | Llangollen Rural | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwmalsie Crescent | Pontllanfraith | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwmaman Road | Aberaman | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwmamman Road | Cwmamman | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmamman Road | Cwmamman | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmamman Road | Betws | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmamman Road | Cwmamman | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmamman Road | Cwmamman | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmamman Road | Cwmamman | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmamman Road | Cwmamman | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmavon Road | Cwmavon | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwmavon Road | Abersychan | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmavon Road | Blaenavon | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmavon Road | Abersychan | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmavon Road | Cwmavon | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwmavon Road | Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwmavon Road | Aberavon | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwmavon Road | Baglan | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwmbach Road | Cwmbach | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwmbach Road | Blaenhonddan | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwmbach Road | Aberdare | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwmbach Road | Cockett | Abertawe / Swansea | Abertawe / Swansea |
| Cwmbach Road | Llanelli Rural | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmbeth Close | Crickhowell | Powys / Powys | Powys / Powys |
| Cwmbowydd Road | Ffestiniog | Gwynedd / Gwynedd | Gwynedd / Gwynedd |
| Cwmbran Court | Grove Hill | Dacorum District (B) | Hertfordshire County |
| Cwmbran Drive | Cwmbran Central | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmbran Drive | Cwmbran Central | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmbran Drive | Pontnewydd | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmbran Drive | Cwmbran Central | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmbran Drive | Llantarnam | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmcarn | Thames | Reading (B) | Reading (B) |
| Cwmcarn Close | Trowbridge | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwmcarn Forest Drive | Risca | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwmcarn Forest Drive | Crosskeys | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwmcarn Forest Drive | Abercarn | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwmcarn Forest Drive | Henllys | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmclais Road | Cwmavon | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwmcoched | Longtown | County of Herefordshire | County of Herefordshire |
| Cwmdare Road | Aberdare | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwmdare Street | Cathays | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwmdegwel | Cardigan | Sir Benfro / Pembrokeshire | Sir Benfro / Pembrokeshire |
| Cwmdonkin Drive | Uplands | Abertawe / Swansea | Abertawe / Swansea |
| Cwmdonkin Terrace | Uplands | Abertawe / Swansea | Abertawe / Swansea |
| Cwmdu Road | Maesteg | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwmdu Road | Troed-y-Rhiw | Merthyr Tudful / Merthyr Tydfil | Merthyr Tudful / Merthyr Tydfil |
| Cwmdu Road | Ystalyfera | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwmdu Street | Maesteg | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwmfelin Road | Llanelli Rural | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmfelin Way | Castle | Abertawe / Swansea | Abertawe / Swansea |
| Cwmfferws Road | Llanedi | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmfferws Road | Llandybie | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmgarw Road | Quarter Bach | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmgarw Road | Quarter Bach | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwmgelli Close | Mynyddbach | Abertawe / Swansea | Abertawe / Swansea |
| Cwmgelli Drive | Mynyddbach | Abertawe / Swansea | Abertawe / Swansea |
| Cwmgelli Road | Mynyddbach | Abertawe / Swansea | Abertawe / Swansea |
| Cwmglo Road | Cyfarthfa | Merthyr Tudful / Merthyr Tydfil | Merthyr Tudful / Merthyr Tydfil |
| Cwmhir Road | Llanbadoc | Sir Fynwy / Monmouthshire | Sir Fynwy / Monmouthshire |
| Cwmhir Road | New Inn | Sir Fynwy / Monmouthshire | Sir Fynwy / Monmouthshire |
| Cwmlan Terrace | Landore | Abertawe / Swansea | Abertawe / Swansea |
| Cwmlws Lane | Penmaenmawr | Conwy / Conwy | Conwy / Conwy |
| Cwmma Road | Brilley | County of Herefordshire | County of Herefordshire |
| Cwmneol Place | Aberaman | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwmneol Street | Aberaman | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwmorthin Road | Ffestiniog | Gwynedd / Gwynedd | Gwynedd / Gwynedd |
| Cwmpadarn | Faenor | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwmpadarn | Llanbadarn Fawr | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwmphil Road | Ystradgynlais | Powys / Powys | Powys / Powys |
| Cwmrhydyceirw Road | Morriston | Abertawe / Swansea | Abertawe / Swansea |
| Cwms Lane | Church Stretton | Shropshire | Shropshire |
| Cwmsaerbren Street | Treherbert | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwmsyfiog Road | Bargoed | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwmsyfiog Road | New Tredegar | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwmtorlais Road | Newbridge | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwmynyscoy Road | Pontymoile | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwmynysmintan Road | Llwydcoed | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwmynysminton Road | Llwydcoed | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwndonkin Close | Uplands | Abertawe / Swansea | Abertawe / Swansea |
| Cwr Y Coed | Llangefni | Sir Ynys Mon / Isle of Anglesey | Sir Ynys Mon / Isle of Anglesey |
| Cwr Y Gaer | Corwen | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwrdy Close | Panteg | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrdy Lane | Pontymoile | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrdy Lane | Panteg | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrdy Road | Panteg | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Aethen | Barry | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt Afallon | Offa | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwrt Anthony Hill | Troed-y-Rhiw | Merthyr Tudful / Merthyr Tydfil | Merthyr Tudful / Merthyr Tydfil |
| Cwrt Ashly | St. Asaph | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwrt Atifeddiaeth | Llantarnam | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Bala | Trowbridge | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt Bedw | Colwyn Bay | Conwy / Conwy | Conwy / Conwy |
| Cwrt Bedwyr | Offa | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwrt Benjamin | Rhymney | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Berllan | Dyserth | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwrt Bleddyn | Cwmbran Central | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Bont Newydd | Laleston | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Boston | Splott | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt Bracty | Llanhilleth | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwrt Brenig | Buckley | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Briallen | Fairwater | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Bryn Derwen | Usk | Sir Fynwy / Monmouthshire | Sir Fynwy / Monmouthshire |
| Cwrt Bryn Isaf | Rhigos | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Bryn Y Bia | Llandudno | Conwy / Conwy | Conwy / Conwy |
| Cwrt Bryn Y Grug | Blackwood | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Camlas | Rogerstone | Casnewydd / Newport | Casnewydd / Newport |
| Cwrt Cefn | Lisvane | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt Ceredig | Llanyrafon | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Cilmeri | Morriston | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Coed Parc | Maesteg | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Coed Saeson | Birchgrove | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Coed-y-brenin | Llantwit Fardre | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Coles | Splott | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt Coral | Sandfields West | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwrt Croesawdy | Newtown and Llanllwchaiarn | Powys / Powys | Powys / Powys |
| Cwrt Cwellyn | Broughton and Bretton | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Cypreswydden | Ogmore Valley | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Dewi Sant | Whitford | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Dinas | Broughton and Bretton | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Dolafon | Newtown and Llanllwchaiarn | Powys / Powys | Powys / Powys |
| Cwrt Dowell | Prestatyn | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwrt Dowlas | Llantarnam | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Draw Llyn | Caerphilly | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Dulas | Lampeter | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwrt Dyfed | Barry | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt Dyffryn | Old Colwyn | Conwy / Conwy | Conwy / Conwy |
| Cwrt Edward | Barry | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt Eglwys | Newtown and Llanllwchaiarn | Powys / Powys | Powys / Powys |
| Cwrt Eirlys | Barry | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt Elusendy | Llanelli | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Emily | Birchgrove | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Faenor | Llantrisant | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Fforest | Mountain Ash | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Gele | Abergele | Conwy / Conwy | Conwy / Conwy |
| Cwrt Glanrhyd | Rhigos | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Glasfryn | Llanegwad | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Glyndwr | Pontypridd | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Griffin | Rudry | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Gwaun Fach | Caerphilly | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Gwscwm | Pembrey and Burry Port Town | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Gwy | Fairwater | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Harris | Treharris | Merthyr Tudful / Merthyr Tydfil | Merthyr Tudful / Merthyr Tydfil |
| Cwrt Helyg | Cefn | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwrt Hendre | Cefn Fforest | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Hocys | Llansamlet | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Honddu | Brecon | Powys / Powys | Powys / Powys |
| Cwrt Hwfa | Bangor | Gwynedd / Gwynedd | Gwynedd / Gwynedd |
| Cwrt Hydd | Morriston | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Hyde | Kinmel Bay and Towyn | Conwy / Conwy | Conwy / Conwy |
| Cwrt Idris | Abergele | Conwy / Conwy | Conwy / Conwy |
| Cwrt Illtyd'en | Llantrisant | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Isaf | Llantwit Fardre | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Isaf | Birchgrove | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Ivor Sims | Morriston | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Lafant | Llansamlet | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Lambourne | Gwersyllt | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwrt Lando | Pembrey and Burry Port Town | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Leighton | Connah's Quay | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Llanfabon | Penyrheol, Trecenydd and Energlyn | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Llanwonno | Mountain Ash | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Llechau | Llanharry | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Lleision | Dyffryn Clydach | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwrt Llewelyn Court | Conwy | Conwy / Conwy | Conwy / Conwy |
| Cwrt Llwyn Fedwen | Morriston | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Llwynog | Morriston | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Llynfi | Maesteg | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Lytham | Holt | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwrt Maes Coch | Bagillt | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Maes-y-rhiw | Fairwater | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Melin | St. Clears | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Menai | Y Felinheli | Gwynedd / Gwynedd | Gwynedd / Gwynedd |
| Cwrt Morgan | Caerwent | Sir Fynwy / Monmouthshire | Sir Fynwy / Monmouthshire |
| Cwrt Mostyn | Llandudno | Conwy / Conwy | Conwy / Conwy |
| Cwrt Mynwy | Fairwater | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Nant Y Felin | Caerphilly | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Neuadd Wen | Bargoed | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Neville | Llanelli | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Newton Pool | Rhoose | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt Newydd | Laleston | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Newydd | Crickhowell | Powys / Powys | Powys / Powys |
| Cwrt Ogwen | Broughton and Bretton | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Olwyn Ddwr | Birchgrove | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Onnen | Hawarden | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Pant Yr Awel | Ogmore Valley | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Pantycelyn | Pontllanfraith | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Pen Y Twyn | Tredegar | Blaenau Gwent / Blaenau Gwent | Blaenau Gwent / Blaenau Gwent |
| Cwrt Penarth | Llanyrafon | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Pencoedtre | Barry | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt Pendragon | Offa | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwrt Penllan | Newtown and Llanllwchaiarn | Powys / Powys | Powys / Powys |
| Cwrt Pensarn | Trowbridge | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt Pentre Bach | Trowbridge | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt Pentref | Rhosddu | Wrecsam / Wrexham | Wrecsam / Wrexham |
| Cwrt Pentwyn | Llantwit Fardre | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Penylan | Fairwater | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Perry | Upper Cwmbran | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Poplys | Llantilio Pertholey | Sir Fynwy / Monmouthshire | Sir Fynwy / Monmouthshire |
| Cwrt Rebecca | Pontardulais | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Rhian | Gorseinon | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Rhos-lan | Hawarden | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Rhosyn | Llansamlet | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Rhyd Galed | Mold | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Roberts | Caerau | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt Sart | Briton Ferry | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwrt Stanllyd | Ammanford | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Swswen | Caersws | Powys / Powys | Powys / Powys |
| Cwrt Syr Dafydd | Llantwit Major | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt Telford | Connah's Quay | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Tre-aman | Aberaman | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Trem Y Bryn | Pontnewydd | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Twyn-rhyd | Rhigos | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Ty Mawr | Van | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Ty Mawr | Penarth | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt Ty Newydd | Ogmore Valley | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Ty Y Felin | Fairwater | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Ty-fferm | Llanbradach and Pwllypant | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Tynewydd | Newbridge | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt W M Hughes | Llandudno | Conwy / Conwy | Conwy / Conwy |
| Cwrt Wilkinson | Buckley | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Wooford | Laugharne Township | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Y Babell | Ynysddu | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Y Brenin | Henfynyw | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwrt Y Cadno | Llanilar | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwrt Y Cadno | Birchgrove | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Y Camden | Brecon | Powys / Powys | Powys / Powys |
| Cwrt Y Carw | Margam | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwrt Y Castell | Llanrhidian Higher | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Y Coed | Blackwood | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Y Coleg | Colwyn Bay | Conwy / Conwy | Conwy / Conwy |
| Cwrt Y Dderwen | Colwyn Bay | Conwy / Conwy | Conwy / Conwy |
| Cwrt Y Dderwen | Ruthin | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwrt Y Fedwen | Llangynwyd Middle | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Y Fedwen | Llansamlet | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Y Garth | Llantrisant | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Y Gloch | Abergwili | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Y Gollen | Blaenhonddan | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwrt Y Gors | Bargoed | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Y Gyrlais | Ystradgynlais | Powys / Powys | Powys / Powys |
| Cwrt Y Mwnws | Maesteg | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Y Mynach | Mold | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Y Porth Fawr | Abersychan | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwrt Y Priordy | Hawarden | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Y Terfyn | Saltney | Sir y Fflint / Flintshire | Sir Y Fflint / Flintshire |
| Cwrt Y Waun | Cefn Fforest | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Y Waun | Llantrisant | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Y Waun | Pontardawe | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwrt Y Wern | Llanelli | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt Ynysmeurig | Abercynon | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Yr Aeron | Morriston | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt Yr Ardal | Trowbridge | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt Yr Efail | Laleston | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Yr Efail | Llantwit Fardre | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt Yr Eos | Margam | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwrt Yr Hen Ysgol | Newcastle Higher | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt Yr Onnen | Llanbadarn Fawr | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwrt Yr Ysgol | Risca | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt Ywen | Pont-y-Clun | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt-coch Street | Bargoed | Caerffili / Caerphilly | Caerffili / Caerphilly |
| Cwrt-ty-mawr | Ogmore Valley | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt-ty-mynydd | Radyr and Morganstown | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt-y- Goedwig | Llantwit Fardre | Rhondda Cynon Taf / Rhondda Cynon Taf | Rhondda Cynon Taf / Rhondda Cynon Taf |
| Cwrt-y-cadno | Newcastle Higher | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt-y-cadno | Llantwit Major | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt-y-cadno | St. Fagans | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt-y-clafdy | Coedffranc | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwrt-y-clafdy Road | Coedffranc | Castell-nedd Port Talbot / Neath Port Talbot | Castell-nedd Port Talbot / Neath Port Talbot |
| Cwrt-y-coed | Brackla | Pen-y-bont ar Ogwr / Bridgend | Pen-y-bont Ar Ogwr / Bridgend |
| Cwrt-y-dderwen | Llanelli | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt-y-faenor | Treharris | Merthyr Tudful / Merthyr Tydfil | Merthyr Tudful / Merthyr Tydfil |
| Cwrt-y-fedw | Birchgrove | Abertawe / Swansea | Abertawe / Swansea |
| Cwrt-y-felin | Wick | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt-y-glyn | Llanfihangel Aberbythych | Sir Gaerfyrddin / Carmarthenshire | Sir Gaerfyrddin / Carmarthenshire |
| Cwrt-y-groes | Henryd | Conwy / Conwy | Conwy / Conwy |
| Cwrt-y-grug | Treharris | Merthyr Tudful / Merthyr Tydfil | Merthyr Tudful / Merthyr Tydfil |
| Cwrt-y-plads | Dyserth | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwrt-y-vil Road | Penarth | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt-y-vil Road (lower) | Penarth | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt-yr-ala Avenue | Caerau | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt-yr-ala Road | Michaelston | Bro Morgannwg / the Vale of Glamorgan | Bro Morgannwg / The Vale of Glamorgan |
| Cwrt-yr-ala Road | Caerau | Caerdydd / Cardiff | Caerdydd / Cardiff |
| Cwrt-yr-angor | Aberystwyth | Sir Ceredigion / Ceredigion | Sir Ceredigion / Ceredigion |
| Cwrtglas | Croesyceiliog | Tor-faen / Torfaen | Tor-faen / Torfaen |
| Cwttir Lane | St. Asaph | Sir Ddinbych / Denbighshire | Sir Ddinbych / Denbighshire |
| Cwymp Road | Llanddulas and Rhyd-y-Foel | Conwy / Conwy | Conwy / Conwy |
