Semi Final
Monmouthshire bt Vale of Glamorgan 114 - 89
Mid Glamorgan bt South Glamorgan 111 - 80
Final
Monmouthshire bt Mid Glamorgan 96 - 91
| SECTION A | SECTION B | |||||||||||||||||
| TEAM | P | W | D | L | F | A | Diff | PTS | TEAM | P | W | D | L | F | A | Diff | PTS | |
| Vale of Glamorgan | 4 | 4 | 0 | 0 | 446 | 348 | 98 | 8 | Mid Glamorgan | 4 | 4 | 0 | 0 | 474 | 394 | 80 | 8 | |
| South Glamorgan | 4 | 3 | 0 | 1 | 398 | 389 | 9 | 6 | Monmouthshire | 4 | 3 | 0 | 1 | 421 | 378 | 43 | 6 | |
| Pembrokeshire | 4 | 1 | 0 | 3 | 392 | 389 | 3 | 2 | West Glamorgan | 4 | 2 | 0 | 2 | 420 | 430 | -10 | 4 | |
| Mid Wales | 4 | 1 | 0 | 3 | 365 | 417 | -52 | 2 | Carmarthen | 4 | 1 | 0 | 3 | 427 | 433 | -6 | 2 | |
| Montgomeryshire | 4 | 1 | 0 | 3 | 373 | 431 | -58 | 0 | Ceredigion | 4 | 0 | 0 | 4 | 341 | 448 | -107 | 0 | |
| Round 1. 22nd May 2018 | Round 1. 22nd May 2018 | |||||||||||||||||
| Pembrokeshire | 90 | v | 101 | Vale of Glamorgan | Mid Glamorgan | 119 | v | 105 | Camarthen County | |||||||||
| Montgomeryshire | 109 | v | 83 | Mid Wales | Ceredigion | 79 | v | 102 | Monmouthshire | |||||||||
| South Glamorgan Bye | West Glamorgan Bye | |||||||||||||||||
| Round 2. 5th June 2018 | Round 2. 5th June 2018 | |||||||||||||||||
| Mid Wales | 87 | v | 125 | Vale of Glamorgan | Monmouthshire | 95 | v | 118 | Mid Glamorgan | |||||||||
| South Glamorgan | 100 | v | 94 | Pembrokeshire | West Glamorgan | 122 | v | 104 | Camarthen County | |||||||||
| Montgomeryshire Bye | Ceredigion Bye | |||||||||||||||||
| Round 3. 19th June 2018 | Round 3. 19th June 2018 | |||||||||||||||||
| Vale of Glamorgan | 114 | v | 82 | Montgomeryshire | Ceredigion | 88 | v | 117 | Mid Glamorgan | |||||||||
| Mid Wales | 91 | v | 96 | South Glamorgan | Monmouthshire | 117 | v | 85 | West Glamorgan | |||||||||
| Pembrokeshire Bye | Camarthen County | |||||||||||||||||
| Round 4. 10th July 2018 | Round 4. 10th July 2018 | |||||||||||||||||
| Vale of Glamorgan | 106 | v | 89 | South Glamorgan | Mid Glamorgan | 120 | v | 88 | West Glamorgan | |||||||||
| Pembrokeshire | 121 | v | 84 | Montgomeryshire | Camarthen County | 122 | v | 85 | Ceredigion | |||||||||
| Mid Wales Bye | Monmouthshire Bye | |||||||||||||||||
| Round 5. 24th July 2018 | Round 5. 24th July 2018 | |||||||||||||||||
| South Glamorgan | 113 | v | 98 | Montgomeryshire | West Glamorgan | 107 | v | 89 | Ceredigion | |||||||||
| Pembrokeshire | 87 | v | 104 | Mid Wales | Camarthen County | 96 | v | 107 | Monmouthshire | |||||||||
| Vale of Glamorgan Bye | Mid Glamorgan Bye | |||||||||||||||||