| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 18-Dec-2020 |  Paul Vallee | Montpellier | France | 07-May-2002 | 18(226) |
| 18-Dec-2020 | Louis Foursans-Bourdette | Montpellier | France | 29-Jan-2002 | 18(324) |
| 12-Dec-2020 |  Charlie Atkinson | London Wasps | England | 07-Oct-2001 | 19(66) |
| 13-Dec-2020 |  Stephen Varney | Gloucester | Italy | 16-May-2001 | 19(211) |
| 20-Dec-2020 |  Ioan Lloyd | Bristol Bears | Wales | 05-Apr-2001 | 19(259) |
| 13-Dec-2020 | Jack Clement | Gloucester | England | 27-Feb-2001 | 19(289) |
| 19-Dec-2020 | Louis Rees-Zammitt | Gloucester | Wales | 02-Feb-2001 | 19(320) |
| 12-Dec-2020 | Ben Carter | Gwent Dragons | Wales | 23-Jan-2001 | 19(323) |
| 13-Dec-2020 | George Barton | Gloucester | England | 07-Nov-2000 | 20(36) |
| 12-Dec-2020 | Alfie Barbeary | London Wasps | England | 05-Oct-2000 | 20(68) |
| 12-Dec-2020 |  Bevan Rodd | Sale Sharks | England | 26-Aug-2000 | 20(108) |
| 11-Dec-2020 | Yoram Moefana | Begles-Bordeaux | France | 18-Jul-2000 | 20(146) |
| 13-Dec-2020 | Jacob Morris | Gloucester | England | 12-May-2000 | 20(215) |
| 04-Apr-2021 | Jordan Joseph | Racing CF | France | 31-Jul-2000 | 20(247) |
| 13-Dec-2020 |  Hugh Tizard | Harlequins | England | 31-Mar-2000 | 20(257) |
| 19-Dec-2020 |  Clement Lanen | Clermont Auvergne | France | 01-Apr-2000 | 20(262) |
| 19-Dec-2020 |  Jack Blain | Edinburgh Rugby | Scotland | 21-Feb-2000 | 20(302) |
| 12-Dec-2020 |  Jac Morgan | Scarlets | Wales | 21-Jan-2000 | 20(326) |
| 12-Dec-2020 | Cameron Redpath | Bath | Scotland | 23-Dec-1999 | 20(355) |
| 19-Dec-2020 | Rio Dyer | Gwent Dragons | Wales | 21-Dec-1999 | 20(364) |
| 13-Dec-2020 | Alex Morgan | Gloucester | England | 26-Nov-1999 | 21(18) |
| 12-Dec-2020 | Taine Basham | Gwent Dragons | Wales | 02-Nov-1999 | 21(41) |
| 12-Dec-2020 | Arthur Vincent | Montpellier | France | 30-Sep-1999 | 21(74) |
| 19-Dec-2020 | Sam Dugdale | Sale Sharks | England | 30-Sep-1999 | 21(81) |
| 13-Dec-2020 | Cadan Murley | Harlequins | England | 31-Jul-1999 | 21(136) |
| 19-Dec-2020 |  Ryan Baird | Leinster | Ireland | 26-Jul-1999 | 21(147) |
| 19-Dec-2020 |  Josh Wycherley | Munster | Ireland | 22-Jul-1999 | 21(151) |
| 12-Dec-2020 | Jean-Baptiste Gros | Toulon | France | 29-May-1999 | 21(198) |
| 12-Dec-2020 | Thomas Lavault | La Rochelle | France | 03-May-1999 | 21(224) |
| 11-Dec-2020 |  Romain Ntamack | Toulouse | France | 01-May-1999 | 21(225) |
| 19-Dec-2020 |  Fraser Dingwell | Northampton Saints | England | 07-Apr-1999 | 21(257) |
| 13-Dec-2020 | Donovan Taofifenua | Racing CF | France | 30-Mar-1999 | 21(259) |
| 11-Dec-2020 | Matthis Lebel | Toulouse | France | 25-Mar-1999 | 21(262) |
| 12-Dec-2020 | Luke James | Sale Sharks | England | 18-Mar-1999 | 21(270) |
| 13-Dec-2020 | Tom Seabrook | Gloucester | England | 15-Feb-1999 | 21(302) |
| 13-Dec-2020 | Marcus Smith | Harlequins | England | 14-Feb-1999 | 21(303) |
| 12-Dec-2020 | Ryan Conbeer | Scarlets | Wales | 05-Feb-1999 | 21(311) |
| 12-Dec-2020 | Louis Carbonel | Toulon | France | 04-Feb-1999 | 21(312) |
| 18-Dec-2020 | Will Porter | London Wasps | England | 14-Dec-1998 | 22(5) |
| 02-Apr-2021 | Jules Favre | La Rochelle | France | 22-Mar-1999 | 22(12) |
| 19-Dec-2020 | Charlie Chapman | Gloucester | Scotland | 01-Dec-1998 | 22(19) |
| 11-Dec-2020 | Cameron Woki | Begles-Bordeaux | France | 07-Nov-1998 | 22(35) |
| 19-Dec-2020 | Matthieu Jalibert | Begles-Bordeaux | France | 06-Nov-1998 | 22(44) |
| 11-Dec-2020 | Maxime Lamothe | Begles-Bordeaux | France | 03-Oct-1998 | 22(70) |
| 11-Dec-2020 |  James Hume | Ulster | Ireland | 07-Sep-1998 | 22(96) |
| 11-Dec-2020 | Michael Lowry | Ulster | Ireland | 20-Aug-1998 | 22(114) |
| 13-Dec-2020 | Matt Fagerson | Glasgow Warriors | Scotland | 16-Jul-1998 | 22(151) |
| 11-Dec-2020 | Nicholas Isiekwe | Northampton Saints | England | 20-Apr-1998 | 22(236) |
| 13-Dec-2020 | Pierre-Loius Barassi | Lyon OU | France | 22-Apr-1998 | 22(236) |
| 19-Dec-2020 | Taiye Ryan Olowofela | Northampton Saints | England | 17-Apr-1998 | 22(247) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).