| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 08-Dec-2017 | Dan Babos | Wales | 17-Oct-1998 | 19(52) |
| 14-Oct-2017 | Jared Rosser | Wales | 31-Dec-1997 | 19(287) |
| 14-Oct-2017 | Aaron Wainwright | Wales | 25-Sep-1997 | 20(19) |
| 14-Oct-2017 | Will Talbot-Davies | Wales | 11-Sep-1997 | 20(33) |
| 14-Oct-2017 | George Gasson | Wales | 15-Jan-1997 | 20(272) |
| 08-Dec-2017 | Arwel Robson | Wales | 21-Feb-1997 | 20(290) |
| 21-Oct-2017 | Leon Brown | Wales | 26-Oct-1996 | 20(360) |
| 14-Oct-2017 | Liam Belcher | Wales | 28-Apr-1996 | 21(169) |
| 14-Oct-2017 | Joseph Davies | Wales | 13-Nov-1995 | 21(336) |
| 21-Oct-2017 | Tyler Morgan | Wales | 11-Sep-1995 | 22(41) |
| 14-Oct-2017 | Ollie Griffiths | Wales | 23-Mar-1995 | 22(206) |
| 13-Jan-2018 | Robson Blake | Wales | 15-May-1995 | 22(244) |
| 14-Oct-2017 | Luke Garrett | Wales | 11-Jan-1995 | 22(277) |
| 14-Oct-2017 | Ashton Hewitt | Wales | 20-Nov-1994 | 22(329) |
| 08-Dec-2017 | Jack Dixon | Wales | 13-Dec-1994 | 22(361) |
| 21-Oct-2017 | Hallam Amos | Wales | 24-Sep-1994 | 23(27) |
| 14-Oct-2017 | Angus O'Brien | Wales | 17-Sep-1994 | 23(27) |
| 20-Jan-2018 | James Sheekey | Wales | 10-Sep-1994 | 23(132) |
| 21-Oct-2017 | Elliott Dee | Wales | 07-Mar-1994 | 23(228) |
| 14-Oct-2017 | James Benjamin | Wales | 21-Feb-1994 | 23(235) |
| 15-Dec-2017 | Ben Roach | Wales | 30-Jan-1994 | 23(319) |
| 08-Dec-2017 | Thomas Davies | Wales | 10-Mar-1993 | 24(273) |
| 14-Oct-2017 | Matthew Screech | Wales | 24-Oct-1992 | 24(355) |
| 21-Oct-2017 | Patrick Howard | South Africa | 27-Mar-1992 | 25(208) |
| 21-Oct-2017 | Cory Hill | Wales | 10-Feb-1992 | 25(254) |
| 14-Oct-2017 | Lloyd Fairbrother | England | 13-Nov-1991 | 25(336) |
| 13-Jan-2018 | Dorian Jones | Wales | 27-Sep-1991 | 26(109) |
| 14-Oct-2017 | Adam Warren | Wales | 07-Mar-1991 | 26(222) |
| 20-Jan-2018 | Carl Meyer | South Africa | 27-May-1991 | 26(239) |
| 15-Dec-2017 | Sam Hobbs | Wales | 13-May-1988 | 29(216) |
| 08-Dec-2017 | Rynard Landman | South Africa | 24-Jul-1986 | 31(138) |
| 14-Oct-2017 | Sarel Pretorius | South Africa | 18-Apr-1984 | 33(179) |
| 15-Dec-2017 | Gavin Henson | Wales | 01-Feb-1982 | 35(318) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).