| # | Constituency |
|---|---|
| 1 | Ynys Môn |
| 2 | Caerfyrddin |
| 3 | Llanelli |
| 4 | Caerphilly |
| 5 | Pontypridd |
| 6 | Neath and Swansea East |
| 7 | Cardiff West |
| 8 | Merthyr Tydfil and Aberdare |
| 9 | Rhondda and Ogmore |
| 10 | Aberafan Maesteg |
| 11 | Blaenau Gwent and Rhymney |
| 12 | Bangor Aberconwy |
| 13 | Swansea West |
| 14 | Montgomeryshire and Glyndwr |
| 15 | Cardiff South and Penarth |
| 16 | Brecon, Radnor and Cwm Tawe |
| 17 | Monmouthshire |
| 18 | Cardiff East |
| 19 | Torfaen |
| 20 | Mid and South Pembrokeshire | # | Constituency |