| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 14-Oct-2017 | Rio Dyer | Wales | 21-Dec-1999 | 17(298) |
| 16-Dec-2017 | Taine Basham | Wales | 02-Nov-1999 | 18(45) |
| 16-Dec-2017 | Lennon Greggains | Wales | 20-Jan-1999 | 18(331) |
| 20-Jan-2018 | Josh Reynolds | Wales | 01-Dec-1998 | 19(50) |
| 21-Oct-2017 | Joe Goodchild | Wales | 12-Apr-1998 | 19(192) |
| 21-Oct-2017 | Owain Leonard | Wales | 24-Dec-1997 | 19(301) |
| 21-Oct-2017 | Will Talbot-Davies | Wales | 11-Sep-1997 | 20(40) |
| 21-Oct-2017 | Nathan Hudd | Wales | 22-Aug-1997 | 20(60) |
| 14-Oct-2017 | Ellis Shipp | Wales | 14-Aug-1997 | 20(61) |
| 16-Dec-2017 | Connor Edwards | Wales | 28-Jun-1997 | 20(171) |
| 21-Oct-2017 | Arwel Robson | Wales | 21-Feb-1997 | 20(242) |
| 12-Jan-2018 | Jack Davies | England | 24-Feb-1997 | 20(322) |
| 14-Oct-2017 | Barney Nightingale | Wales | 05-Nov-1996 | 20(343) |
| 14-Oct-2017 | Keagan Bale | Wales | 29-Sep-1995 | 22(16) |
| 14-Oct-2017 | Chay Smith | Wales | 19-Sep-1995 | 22(26) |
| 14-Oct-2017 | Toby Fricker | Wales | 20-Jul-1995 | 22(87) |
| 16-Dec-2017 | Robson Blake | Wales | 15-May-1995 | 22(216) |
| 14-Oct-2017 | James Sheekey | Wales | 10-Sep-1994 | 23(34) |
| 16-Dec-2017 | Angus O'Brien | Wales | 17-Sep-1994 | 23(90) |
| 14-Oct-2017 | Scott Andrews | Wales | 30-Jun-1994 | 23(106) |
| 16-Dec-2017 | Joshua Skinner | Wales | 22-Jun-1994 | 23(177) |
| 14-Oct-2017 | Scott Matthews | Wales | 08-Feb-1994 | 23(248) |
| 14-Oct-2017 | Ben Roach | Wales | 30-Jan-1994 | 23(257) |
| 14-Oct-2017 | Lance Randall | England | 25-Dec-1993 | 23(293) |
| 14-Oct-2017 | Josh Prosser | Wales | 25-Oct-1992 | 24(354) |
| 12-Jan-2018 | Matt O'Brien | Wales | 30-May-1992 | 25(227) |
| 12-Jan-2018 | Johnny Morris | Wales | 22-Apr-1992 | 25(265) |
| 14-Oct-2017 | Dorian Jones | Wales | 27-Sep-1991 | 26(18) |
| 14-Oct-2017 | Charlie Davies | England | 23-May-1990 | 27(144) |
| 12-Jan-2018 | Sam Beard | New Zealand | 03-May-1990 | 27(254) |
| 20-Jan-2018 | Rhys Buckley | Wales | 18-Jun-1989 | 28(216) |
| 14-Oct-2017 | Phil Price | Wales | 10-Nov-1988 | 28(338) |
| 21-Oct-2017 | Lewis Evans | Wales | 09-Jul-1987 | 30(105) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).