| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 02-Feb-2018 | Dewi Cross | Wales | 06-Dec-1999 | 18(59) |
| 26-Jan-2018 | Cai Evans | Wales | 23-Jun-1999 | 18(218) |
| 26-Jan-2018 | Callum Carson | Wales | 13-Mar-1999 | 18(320) |
| 10-Nov-2017 | Will Jones | Wales | 03-Dec-1998 | 18(343) |
| 10-Nov-2017 | Morgan Morris | Wales | 28-Aug-1998 | 19(74) |
| 10-Nov-2017 | Reuben Morgan-Williams | Wales | 02-Feb-1998 | 19(281) |
| 10-Nov-2017 | James Ratti | Wales | 14-Oct-1997 | 20(27) |
| 10-Nov-2017 | Phil Jones | Wales | 09-Aug-1997 | 20(93) |
| 10-Nov-2017 | Kieran Williams | Wales | 12-Apr-1997 | 20(212) |
| 10-Nov-2017 | Tom Williams | Wales | 03-Jul-1996 | 21(130) |
| 10-Nov-2017 | Ifan Phillips | Wales | 29-Jan-1996 | 21(286) |
| 10-Nov-2017 | Luke Price | Wales | 26-Sep-1995 | 22(46) |
| 10-Nov-2017 | Dafydd Howells | Wales | 22-Mar-1995 | 22(234) |
| 10-Nov-2017 | Rory Thornton | Wales | 16-Mar-1995 | 22(240) |
| 26-Jan-2018 | Alex Jeffries | Wales | 27-Apr-1995 | 22(275) |
| 26-Jan-2018 | Scott Otten | Wales | 19-Jul-1994 | 23(191) |
| 10-Nov-2017 | Joe Tomalin-Reeves | Wales | 15-Dec-1993 | 23(330) |
| 10-Nov-2017 | Gareth Thomas | Wales | 02-Aug-1993 | 24(100) |
| 02-Feb-2018 | Sam Cross | Wales | 26-Aug-1992 | 25(160) |
| 10-Nov-2017 | Rhodri Jones | Wales | 23-Dec-1991 | 25(323) |
| 10-Nov-2017 | Jay Baker | Wales | 06-Oct-1991 | 26(36) |
| 26-Jan-2018 | Lloyd Ashley | Wales | 02-Feb-1991 | 26(359) |
| 17-Nov-2017 | Guy Mercer | England | 12-Dec-1989 | 27(340) |
| 02-Feb-2018 | Ma'afu Fia | Tonga | 22-Nov-1989 | 28(72) |
| 17-Nov-2017 | Scott Baldwin | Wales | 12-Jul-1988 | 29(128) |
| 02-Feb-2018 | Kieron Fonotia | Samoa | 02-Feb-1988 | 30(1) |
| 17-Nov-2017 | Robert McCusker | Wales | 12-Oct-1985 | 32(36) |
| 17-Nov-2017 | James Hook | Wales | 27-Jun-1985 | 32(143) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).