# The Senedd Cymru Constituency Regulations 2025, Schedule: Name, designation and composition of Senedd constituencies


Table 1
Name of Senedd constituencies
UK parliamentary constituencies
Constituency 1
Constituency 2
Bangor Conwy Môn
County Constituency
Bangor Aberconwy
Ynys Môn
Clwyd
County Constituency
Clwyd East
Clwyd North
Fflint Wrecsam
County Constituency
Alyn and Deeside
Wrexham
Gwynedd Maldwyn
County Constituency
Dwyfor Meirionnydd
Montgomeryshire and Glyndŵr
Ceredigion Penfro
County Constituency
Ceredigion Preseli
Mid and South Pembrokeshire
Sir Gaerfyrddin
County Constituency
Caerfyrddin
Llanelli
Gŵyr Abertawe
County Constituency
Gower
Swansea West
Brycheiniog Tawe Nedd
County Constituency
Brecon, Radnor and Cwm Tawe
Neath and Swansea East
Afan Ogwr Rhondda
County Constituency
Aberafan Maesteg
Rhondda and Ogmore
Pontypridd Cynon Merthyr
County Constituency
Merthyr Tydfil and Aberdare
Pontypridd
Blaenau Gwent Caerffili Rhymni
County Constituency
Blaenau Gwent and Rhymney
Caerphilly
Sir Fynwy Torfaen
County Constituency
Monmouthshire
Torfaen
Casnewydd Islwyn
County Constituency
Newport East
Newport West and Islwyn
Caerdydd Penarth
County Constituency
Cardiff West
Cardiff South and Penarth
Caerdydd Ffynnon Taf
County Constituency
Cardiff North
Cardiff East
Pen-y-bont Bro Morgannwg
County Constituency
Bridgend
Vale of Glamorgan

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Source: https://www.legislation.gov.uk/wsi/2025/709/schedule (the official version)
Page: https://openlegislation.uk/senedd-cymru-constituency-regulations-2025/schedule
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.