| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 02-Sep-2017 | Marcus Smith | England | 14-Feb-1999 | 18(201) |
| 02-Sep-2017 | Joe Marchant | England | 16-Jul-1996 | 21(48) |
| 25-Nov-2017 | Lewis Boyce | England | 30-Jul-1996 | 21(118) |
| 17-Feb-2018 | Stanley South | England | 24-Jul-1996 | 21(208) |
| 28-Oct-2017 | Elia Elia | Samoa | 22-Jan-1996 | 21(280) |
| 28-Oct-2017 | James Chisholm | England | 11-Aug-1995 | 22(79) |
| 19-Nov-2017 | James Lang | Scotland | 04-Apr-1995 | 22(230) |
| 30-Sep-2017 | Aaron Morris | England | 10-Jan-1995 | 22(264) |
| 19-Nov-2017 | Harry Sloan | England | 16-Jun-1994 | 23(156) |
| 09-Sep-2017 | Kyle Sinckler | England | 30-Mar-1993 | 24(163) |
| 02-Sep-2017 | Jack Clifford | England | 12-Feb-1993 | 24(202) |
| 02-Sep-2017 | Charlie Walker | England | 23-Dec-1992 | 24(253) |
| 09-Sep-2017 | George Merrick | England | 04-Oct-1992 | 24(340) |
| 02-Sep-2017 | Marland Yarde | England | 20-Apr-1992 | 25(135) |
| 19-Nov-2017 | Jono Kitto | New Zealand | 30-Mar-1992 | 25(234) |
| 30-Sep-2017 | Charles Matthews | England | 23-Jul-1991 | 26(70) |
| 02-Sep-2017 | Rob Buchanan | England | 13-May-1991 | 26(113) |
| 02-Sep-2017 | Will Collier | England | 05-May-1991 | 26(121) |
| 02-Sep-2017 | Ben Glynn | England | 27-Mar-1991 | 26(160) |
| 28-Oct-2017 | Alofa Alofa | Samoa | 12-Mar-1991 | 26(231) |
| 19-Nov-2017 | Ross Chisholm | England | 05-Oct-1990 | 27(45) |
| 07-Apr-2018 | Francis Saili | New Zealand | 16-Feb-1991 | 27(50) |
| 02-Sep-2017 | Joe Marler | England | 07-Jul-1990 | 27(57) |
| 11-Feb-2018 | Luke Wallace | England | 02-Oct-1990 | 27(132) |
| 09-Sep-2017 | Demitri Catrakills | South Africa | 06-Jul-1989 | 28(65) |
| 03-Dec-2017 | Renaldo Bothma | Namibia | 18-Sep-1989 | 28(76) |
| 11-Feb-2018 | David Lewis | England | 29-Apr-1989 | 28(288) |
| 09-Sep-2017 | Joe Gray | England | 05-Aug-1988 | 29(35) |
| 17-Sep-2017 | Matt Luamanu | Samoa | 04-Apr-1988 | 29(166) |
| 30-Sep-2017 | Tim Visser | Scotland | 29-May-1987 | 30(125) |
| 02-Sep-2017 | Danny Care | England | 02-Jan-1987 | 30(244) |
| 02-Sep-2017 | Jamie Roberts | Wales | 08-Nov-1986 | 30(299) |
| 02-Sep-2017 | Chris Robshaw | England | 04-Jun-1986 | 31(91) |
| 02-Sep-2017 | Mike Brown | England | 04-Sep-1985 | 31(363) |
| 02-Sep-2017 | James Horwill | Australia | 29-May-1985 | 32(96) |
| 02-Sep-2017 | David Ward | England | 21-May-1985 | 32(104) |
| 23-Sep-2017 | Mark Lambert | England | 19-Feb-1985 | 32(216) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).