| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 21-Jan-2012 |  Jordan Williams | Scarlets | Wales | 20-Sep-1993 | 18(123) |
| 22-Jan-2012 |  Sam Hill | Cornish Pirates | England | 14-Jul-1993 | 18(192) |
| 20-Jan-2012 |  Conor Joyce | Ulster | Ireland | 05-Jul-1993 | 18(199) |
| 20-Jan-2012 | Chris Farrell | Ulster | Ireland | 16-Mar-1993 | 18(310) |
| 06-Apr-2012 |  Luke McGrath | Leinster | Ireland | 03-Feb-1993 | 19(62) |
| 22-Jan-2012 | Conor Gilsenan | Leinster | Ireland | 10-Sep-1992 | 19(133) |
| 20-Jan-2012 |  JJ Hanrahan | Munster | Ireland | 27-Jul-1992 | 19(176) |
| 22-Jan-2012 | Aaron Penberthy | Cornish Pirates | England | 12-Jun-1992 | 19(223) |
| 22-Jan-2012 |  Cory Hill | Pontypridd | Wales | 10-Feb-1992 | 19(346) |
| 20-Jan-2012 | Paddy Jackson | Ulster | Ireland | 05-Jan-1992 | 20(15) |
| 20-Jan-2012 | Blaine McIlroy | Ulster | Ireland | 04-Dec-1991 | 20(47) |
| 22-Jan-2012 |  James Stokes | Nottingham | England | 19-Nov-1991 | 20(64) |
| 21-Jan-2012 | Marc Jones | Cross Keys | Wales | 15-Nov-1991 | 20(67) |
| 22-Jan-2012 | Andrew Boyle | Leinster | Ireland | 24-Jun-1991 | 20(212) |
| 22-Jan-2012 | Oliver Taylor | Nottingham | England | 05-Jun-1991 | 20(231) |
| 22-Jan-2012 | Thomas Cowan Dickie | Cornish Pirates | England | 26-May-1991 | 20(241) |
| 22-Jan-2012 | Brendan Macken | Leinster | Ireland | 19-May-1991 | 20(248) |
| 06-Apr-2012 | Andrew Conway | Leinster | Ireland | 11-Jul-1991 | 20(270) |
| 22-Jan-2012 | Jordi Murphy | Leinster | Ireland | 22-Apr-1991 | 20(275) |
| 21-Jan-2012 | Liam Williams | Scarlets | Wales | 09-Apr-1991 | 20(287) |
| 22-Jan-2012 | Andrew Short | Cornish Pirates | England | 26-Mar-1991 | 20(302) |
| 20-Jan-2012 | Luke Marshall | Ulster | Ireland | 03-Mar-1991 | 20(323) |
| 22-Jan-2012 | Chris Phillips | Pontypridd | Wales | 15-Feb-1991 | 20(341) |
| 22-Jan-2012 | Matthew Shields | Nottingham | England | 12-Feb-1991 | 20(344) |
| 22-Jan-2012 | Joe Munro | Nottingham | England | 30-Jan-1991 | 20(357) |
| 22-Jan-2012 | Colm O'Shea | Leinster | Ireland | 19-Jan-1991 | 21(3) |
| 06-Apr-2012 | Martin Moore | Leinster | Ireland | 01-Mar-1991 | 21(37) |
| 20-Jan-2012 | Patrick Butler | Munster | Ireland | 01-Dec-1990 | 21(50) |
| 20-Jan-2012 | Michael Allen | Ulster | Ireland | 28-Nov-1990 | 21(53) |
| 21-Jan-2012 | Steffan Jones | Cross Keys | Wales | 22-Nov-1990 | 21(60) |
| 22-Jan-2012 | Dave Ewers | Cornish Pirates | England | 03-Nov-1990 | 21(80) |
| 22-Jan-2012 | Finley Barnham | Nottingham | England | 26-Sep-1990 | 21(118) |
| 20-Jan-2012 | Conor Gaston | Ulster | Ireland | 05-Aug-1990 | 21(168) |
| 20-Jan-2012 | Luke O'Dea | Munster | Ireland | 18-Jul-1990 | 21(186) |
| 06-Apr-2012 | Brian Hayes | Munster | Ireland | 25-Sep-1990 | 21(194) |
| 21-Jan-2012 | Greg George | Scarlets | Wales | 23-Jun-1990 | 21(212) |
| 22-Jan-2012 | Darren Hudson | Leinster | Ireland | 09-Jun-1990 | 21(227) |
| 22-Jan-2012 | Noel Reid | Leinster | Ireland | 22-May-1990 | 21(245) |
| 22-Jan-2012 | John Cooney | Leinster | Ireland | 01-May-1990 | 21(266) |
| 06-Apr-2012 | Dominic Ryan | Leinster | Ireland | 28-May-1990 | 21(314) |
| 20-Jan-2012 | Brian O'Hara | Munster | Ireland | 11-Mar-1990 | 21(315) |
| 22-Jan-2012 | Rhys Downes | Pontypridd | Wales | 10-Mar-1990 | 21(318) |
| 22-Jan-2012 | Jack McGrath | Leinster | Ireland | 11-Oct-1989 | 22(103) |
| 27-Apr-2012 | Dave O'Callaghan | Munster | Ireland | 12-Jan-1990 | 22(106) |
| 22-Jan-2012 | Thomas Calladine | Nottingham | England | 02-Aug-1989 | 22(173) |
| 22-Jan-2012 | Mark Flanagan | Leinster | Ireland | 02-Aug-1989 | 22(173) |
| 06-Apr-2012 | Danny Barnes | Munster | Ireland | 07-Oct-1989 | 22(182) |
| 20-Jan-2012 | Paddy McAllister | Ulster | Ireland | 20-Jul-1989 | 22(184) |
| 21-Jan-2012 | Criag Price | Scarlets | Wales | 22-Jun-1989 | 22(213) |
| 22-Jan-2012 | David Kearney | Leinster | Ireland | 19-Jun-1989 | 22(217) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).