Semi Finals
South Glamorgan bt Pembrokeshire 123 - 113
Monmouthshire bt Carmarthenshire 128 - 99
Final
South Glamorgan bt Monmouthshire 145 - 99
| SECTION A | SECTION B | |||||||||||||||||
| TEAM | P | W | D | L | F | A | Diff | PTS | TEAM | P | W | D | L | F | A | Diff | PTS | |
| South Glamorgan | 4 | 3 | 0 | 1 | 511 | 409 | 102 | 6 | Monmouthshire | 4 | 4 | 0 | 0 | 562 | 390 | 172 | 8 | |
| Carmarthenshire | 4 | 3 | 0 | 1 | 520 | 422 | 98 | 6 | Pembrokeshire | 4 | 2 | 0 | 2 | 475 | 453 | 22 | 4 | |
| Mid Glamorgan | 4 | 3 | 0 | 1 | 501 | 415 | 86 | 6 | West Glamorgan | 4 | 2 | 0 | 2 | 449 | 478 | -29 | 4 | |
| Mid Wales | 4 | 1 | 0 | 3 | 438 | 504 | -66 | 2 | Vale of Glamorgan | 4 | 1 | 0 | 3 | 456 | 476 | -20 | 2 | |
| Ceredigion | 4 | 0 | 0 | 4 | 363 | 583 | -220 | 0 | Montgomeryshire | 4 | 1 | 0 | 3 | 389 | 534 | -145 | 2 | |
| Round 1. 20th May 2018 | Round 1. 20th May 2018 | |||||||||||||||||
| Mid Glamorgan | 158 | v | 86 | Mid Wales | Vale of Glamorgan | 115 | v | 128 | Pembrokeshire | |||||||||
| Ceredigion | 86 | v | 160 | South Glamorgan | Montgomeryshire | 91 | v | 169 | Monmouthshire | |||||||||
| Camarthan County Bye | West Glamorgan Bye | |||||||||||||||||
| Round 2. 3rd June 2018 | Round 2. 3rd June 2018 | |||||||||||||||||
| South Glamorgan | 100 | v | 118 | Mid Glamorgan | Monmouthshire | 134 | v | 99 | Vale of Glamorgan | |||||||||
| Camarthan County | 135 | v | 115 | Mid Wales | West Glamorgan | 127 | v | 106 | Pembrokeshire | |||||||||
| Ceredigion Bye | Montgomeryshire Bye | |||||||||||||||||
| Round 3. 17th June 2018 | Round 3. 17th June 2018 | |||||||||||||||||
| Ceredigion | 112 | v | 123 | Mid Glamorgan | Montgomeryshire | 111 | v | 105 | Vale of Glamorgan | |||||||||
| South Glamorgan | 121 | v | 120 | Carmarthenshire | Monmouthshire | 140 | v | 90 | West Glamorgan | |||||||||
| Mid Wales Bye | Pembrokeshire Bye | |||||||||||||||||
| Round 4. 15th July 2018 | Round 4. 15th July 2018 | |||||||||||||||||
| Mid Glamorgan | 102 | v | 117 | Carmarthenshire | Vale of Glamorgan | 137 | v | 103 | West Glamorgan | |||||||||
| Mid Wales | 152 | v | 81 | Ceredigion | Pembrokeshire | 131 | v | 92 | Montgomeryshire | |||||||||
| South Glamorgan Bye | Monmouthshire Bye | |||||||||||||||||
| Round 5. 22nd July 2018 | Round 5. 22nd July 2018 | |||||||||||||||||
| Carmarthenshire | 148 | v | 84 | Ceredigion | West Glamorgan | 129 | v | 95 | Montgomeryshire | |||||||||
| Mid Wales | 85 | v | 130 | South Glamorgan | Pembrokeshire | 110 | v | 119 | Monmouthshire | |||||||||
| Mid Glamorgan Bye | Vale of Glamorgan Bye | |||||||||||||||||