| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 26-Jan-2013 |  Tom Howe | London Wasps | England | 03-Jun-1995 | 17(238) |
| 26-Jan-2013 |  Dafydd Howells | Ospreys | Wales | 22-Mar-1995 | 17(311) |
| 10-Nov-2012 | Jack Dixon | Gwent Dragons | Wales | 13-Dec-1994 | 17(333) |
| 10-Nov-2012 | Hallam Amos | Gwent Dragons | Wales | 24-Sep-1994 | 18(48) |
| 27-Jan-2013 |  Maro Itoje | Saracens | England | 28-Oct-1994 | 18(92) |
| 10-Nov-2012 |  Harry Sloan | Harlequins | England | 16-Jun-1994 | 18(148) |
| 09-Nov-2012 |  Billy Burns | Gloucester | Ireland | 13-Jun-1994 | 18(150) |
| 09-Nov-2012 |  Henry Purdy | Leicester Tigers | England | 21-May-1994 | 18(173) |
| 10-Nov-2012 |  Tom Stephenson | Northampton Saints | England | 05-May-1994 | 18(190) |
| 11-Nov-2012 |  Joel Conlon | Exeter Chiefs | England | 04-May-1994 | 18(192) |
| 09-Nov-2012 | Ross Moriarty | Gloucester | Wales | 18-Apr-1994 | 18(206) |
| 10-Mar-2013 |  Michael Haley | Sale Sharks | Ireland | 28-Jun-1994 | 18(256) |
| 11-Nov-2012 |  Anthony Watson | London Irish | England | 26-Feb-1994 | 18(259) |
| 17-Nov-2012 | Steff Reynolds | Gloucester | England | 23-Oct-1993 | 19(25) |
| 10-Nov-2012 |  Dan Thomas | Scarlets | Wales | 11-Oct-1993 | 19(30) |
| 17-Nov-2012 | Sam Davies | Ospreys | Wales | 06-Oct-1993 | 19(42) |
| 10-Nov-2012 | Ollie Devoto | Bath | England | 22-Sep-1993 | 19(49) |
| 09-Nov-2012 | Elliot Stooke | Gloucester | England | 10-Sep-1993 | 19(60) |
| 26-Jan-2013 | Rhodri Hughes | Ospreys | Wales | 26-Nov-1993 | 19(61) |
| 10-Nov-2012 | Ieuan Jones | Gwent Dragons | Wales | 22-Jul-1993 | 19(111) |
| 11-Nov-2012 | Sam Hill | Exeter Chiefs | England | 14-Jul-1993 | 19(120) |
| 03-Feb-2013 | Harry Wells | Leicester Tigers | England | 29-Sep-1993 | 19(127) |
| 17-Nov-2012 | Luke Cowan-Dickie | Exeter Chiefs | England | 20-Jun-1993 | 19(150) |
| 26-Jan-2013 | Richard Lane | Bath | England | 21-Jul-1993 | 19(189) |
| 17-Nov-2012 | Rhodri Williams | Scarlets | Wales | 05-May-1993 | 19(196) |
| 26-Jan-2013 | Dan Suter | Ospreys | Wales | 29-Jun-1993 | 19(211) |
| 11-Nov-2012 | Jack Nowell | Exeter Chiefs | England | 11-Apr-1993 | 19(214) |
| 17-Nov-2012 |  Harry Robinson | Cardiff Blues | Wales | 16-Apr-1993 | 19(215) |
| 11-Nov-2012 | Henry Slade | Exeter Chiefs | England | 19-Mar-1993 | 19(237) |
| 18-Nov-2012 | George Ford | Leicester Tigers | England | 16-Mar-1993 | 19(247) |
| 11-Nov-2012 | Mark Jennings | Sale Sharks | England | 27-Feb-1993 | 19(257) |
| 01-Feb-2013 | Rhys Patchell | Cardiff Blues | Wales | 17-May-1993 | 19(260) |
| 26-Jan-2013 | Nathan Morris | London Wasps | England | 03-Mar-1993 | 19(329) |
| 17-Mar-2013 | Nathan Fowles | Sale Sharks | England | 08-Apr-1993 | 19(343) |
| 09-Nov-2012 | Lewis Jones | Cardiff Blues | Wales | 24-Nov-1992 | 19(350) |
| 17-Nov-2012 | Samson Lee | Scarlets | Wales | 30-Nov-1992 | 19(352) |
| 09-Nov-2012 | Nicholas Auterac | Saracens | England | 12-Nov-1992 | 19(362) |
| 09-Nov-2012 | Thomas Bell | London Wasps | England | 11-Nov-1992 | 19(363) |
| 27-Jan-2013 | Tom Jubb | Saracens | England | 26-Jan-1993 | 20(1) |
| 26-Jan-2013 | Tom Price | Leicester Tigers | England | 22-Jan-1993 | 20(4) |
| 09-Nov-2012 | Billy Vunipola | London Wasps | England | 03-Nov-1992 | 20(6) |
| 09-Nov-2012 | Joe Cain | Leicester Tigers | England | 29-Oct-1992 | 20(11) |
| 09-Nov-2012 | Elliot Daly | London Wasps | England | 08-Oct-1992 | 20(32) |
| 09-Nov-2012 | William Graulich | Gloucester | England | 05-Oct-1992 | 20(35) |
| 11-Nov-2012 | Ross Harrison | Sale Sharks | England | 03-Sep-1992 | 20(69) |
| 09-Nov-2012 | Ian Clark | Gloucester | England | 01-Sep-1992 | 20(69) |
| 10-Nov-2012 | Jamie Elliott | Northampton Saints | England | 31-Aug-1992 | 20(71) |
| 11-Nov-2012 | Will Addison | Sale Sharks | England | 20-Aug-1992 | 20(83) |
| 11-Nov-2012 | Sam Blanchet | Exeter Chiefs | England | 05-Aug-1992 | 20(98) |
| 09-Nov-2012 | Jonah Holmes | London Wasps | Wales | 24-Jul-1992 | 20(108) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).