| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 24-Feb-2017 |  Corey Baldwin | Wales U20 | Wales | 13-Oct-1999 | 17(135) |
| 10-Feb-2017 | Romain Ntamack | France U20 | France | 01-May-1999 | 17(286) |
| 10-Mar-2017 | Killian Geraci | France U20 | France | 25-Mar-1999 | 17(351) |
| 03-Feb-2017 | Ryan Conbeer | Wales U20 | Wales | 05-Feb-1999 | 17(364) |
| 03-Feb-2017 | Will Jones | Wales U20 | Wales | 03-Dec-1998 | 18(63) |
| 03-Feb-2017 | Morgan Morris | Wales U20 | Wales | 28-Aug-1998 | 18(160) |
| 03-Feb-2017 | Giovanni D'Onofrio | Italy U20 | Italy | 25-Aug-1998 | 18(163) |
| 03-Feb-2017 | Matt Fagerson | Scotland U20 | Scotland | 16-Jul-1998 | 18(203) |
| 03-Feb-2017 | Dane Blacker | Wales U20 | Wales | 06-Jul-1998 | 18(213) |
| 10-Feb-2017 | Jacob Umaga | England U20 | England | 08-Jul-1998 | 18(218) |
| 10-Mar-2017 | Ugo Boniface | France U20 | France | 21-Jul-1998 | 18(233) |
| 04-Feb-2017 | Tom Curry | England U20 | England | 15-Jun-1998 | 18(235) |
| 03-Feb-2017 | Cameron Hutchinson | Scotland U20 | Scotland | 01-Jun-1998 | 18(248) |
| 10-Feb-2017 | Charlie Francoz | France U20 | France | 03-Jun-1998 | 18(253) |
| 03-Feb-2017 | Edoardo Iachizzi | Italy U20 | Italy | 26-May-1998 | 18(254) |
| 24-Feb-2017 | Ben Curry | England U20 | England | 15-Jun-1998 | 18(255) |
| 04-Feb-2017 | Thomas Darmon | France U20 | France | 12-May-1998 | 18(269) |
| 04-Feb-2017 | Joseph Morris | England U20 | England | 08-May-1998 | 18(273) |
| 03-Feb-2017 | Iacopo Bianchi | Italy U20 | Italy | 05-May-1998 | 18(275) |
| 17-Mar-2017 | Michele Lamaro | Italy U20 | Italy | 03-Jun-1998 | 18(288) |
| 04-Feb-2017 | Nicholas Isiekwe | England U20 | England | 20-Apr-1998 | 18(291) |
| 04-Feb-2017 | Will Butler | England U20 | England | 17-Apr-1998 | 18(294) |
| 17-Mar-2017 | Niccolo Cannone | Italy U20 | Italy | 17-May-1998 | 18(305) |
| 03-Feb-2017 | Ioan Nicholas | Wales U20 | Wales | 03-Apr-1998 | 18(307) |
| 03-Feb-2017 | Caelan Doris | Ireland U20 | Ireland | 02-Apr-1998 | 18(308) |
| 03-Feb-2017 | Max Williams | Wales U20 | Wales | 02-Apr-1998 | 18(308) |
| 24-Feb-2017 | Pierre-Loius Barassi | France U20 | France | 22-Apr-1998 | 18(309) |
| 03-Feb-2017 | Ludovico Vaccari | Italy U20 | Italy | 10-Mar-1998 | 18(331) |
| 24-Feb-2017 | Corrie Tarrant | Wales U20 | Wales | 20-Mar-1998 | 18(342) |
| 24-Feb-2017 | Ciaran Knight | England U20 | England | 19-Mar-1998 | 18(343) |
| 10-Feb-2017 | Gabriel Ibitoye | England U20 | England | 05-Mar-1998 | 18(343) |
| 03-Feb-2017 | Jonny Stewart | Ireland U20 | Ireland | 20-Feb-1998 | 18(349) |
| 10-Feb-2017 | Stafford McDowell | Scotland U20 | Scotland | 24-Feb-1998 | 18(352) |
| 04-Feb-2017 | Nathan Decron | France U20 | France | 17-Feb-1998 | 18(353) |
| 03-Feb-2017 | Rhys Carre | Wales U20 | Wales | 08-Feb-1998 | 18(361) |
| 24-Feb-2017 | James Botham | Wales U20 | Wales | 22-Feb-1998 | 19(2) |
| 04-Feb-2017 | Tom Parton | England U20 | England | 02-Feb-1998 | 19(2) |
| 24-Feb-2017 | Tommy O'Brien | Ireland U20 | Ireland | 20-Feb-1998 | 19(4) |
| 17-Mar-2017 | Henry Walker | England U20 | England | 10-Mar-1998 | 19(7) |
| 04-Feb-2017 | Benjamin Earl | England U20 | England | 07-Jan-1998 | 19(28) |
| 03-Feb-2017 | Antonio Rizzi | Italy U20 | Italy | 05-Jan-1998 | 19(29) |
| 03-Feb-2017 | Jared Rosser | Wales U20 | Wales | 31-Dec-1997 | 19(34) |
| 17-Mar-2017 | Reuben Morgan-Williams | Wales U20 | Wales | 02-Feb-1998 | 19(43) |
| 04-Feb-2017 | Harry Randall | England U20 | England | 18-Dec-1997 | 19(48) |
| 03-Feb-2017 | Fineen Wycherley | Ireland U20 | Ireland | 11-Dec-1997 | 19(54) |
| 04-Feb-2017 | Julien Ruaud | France U20 | France | 07-Dec-1997 | 19(59) |
| 03-Feb-2017 | Ciaran Frawley | Ireland U20 | Ireland | 04-Dec-1997 | 19(61) |
| 24-Feb-2017 | Jamie Blamire | England U20 | England | 22-Dec-1997 | 19(64) |
| 03-Feb-2017 | Gavin Mullin | Ireland U20 | Ireland | 29-Nov-1997 | 19(66) |
| 04-Feb-2017 | Joe Cokanasiga | England U20 | England | 15-Nov-1997 | 19(81) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).