| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 04-Feb-2018 | Sam Simmonds | England | 10-Nov-1994 | 23(86) |
| 04-Feb-2018 | Maro Itoje | England | 28-Oct-1994 | 23(99) |
| 04-Feb-2018 | Anthony Watson | England | 26-Feb-1994 | 23(343) |
| 04-Feb-2018 | George Ford | England | 16-Mar-1993 | 24(325) |
| 17-Mar-2018 | Kyle Sinckler | England | 30-Mar-1993 | 24(352) |
| 10-Mar-2018 | Elliot Daly | England | 08-Oct-1992 | 25(153) |
| 04-Feb-2018 | Owen Farrell | England | 21-Sep-1991 | 26(137) |
| 24-Feb-2018 | Nathan Hughes | England | 10-Jun-1991 | 26(260) |
| 10-Feb-2018 | Jonathan Joseph | England | 21-May-1991 | 26(266) |
| 04-Feb-2018 | Joe Launchberry | England | 12-Apr-1991 | 26(299) |
| 04-Feb-2018 | Makovina Vunipola | England | 13-Jan-1991 | 27(22) |
| 10-Mar-2018 | Jamie George | England | 20-Oct-1990 | 27(141) |
| 04-Feb-2018 | Jonny May | England | 01-Apr-1990 | 27(309) |
| 17-Mar-2018 | George Kruis | England | 22-Feb-1990 | 28(23) |
| 04-Feb-2018 | Ben Youngs | England | 05-Sep-1989 | 28(152) |
| 04-Feb-2018 | Courtney Lawes | England | 23-Feb-1989 | 28(346) |
| 04-Feb-2018 | Dan Cole | England | 09-May-1987 | 30(272) |
| 04-Feb-2018 | Ben Te'o | England | 27-Jan-1987 | 31(9) |
| 10-Feb-2018 | Danny Care | England | 02-Jan-1987 | 31(39) |
| 04-Feb-2018 | Chris Robshaw | England | 04-Jun-1986 | 31(246) |
| 04-Feb-2018 | Dylan Hartley | England | 24-Mar-1986 | 31(318) |
| 04-Feb-2018 | Mike Brown | England | 04-Sep-1985 | 32(153) |
| 17-Mar-2018 | James Haskell | England | 02-Apr-1985 | 32(349) |
| 17-Mar-2018 | Richard Wigglesworth | England | 09-Jun-1983 | 34(282) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).