| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 05-May-2018 | Brendan O'Connor | New Zealand | 31-May-1983 | 34(340) |
| 05-May-2018 | Tatafu Polota Nau | Australia | 26-Jul-1985 | 32(283) |
| 14-Apr-2018 | Matt Smith | England | 15-Nov-1985 | 32(150) |
| 07-Oct-2017 | Daniel Tuohy | Ireland | 18-Jun-1985 | 32(111) |
| 05-May-2018 | Matthew Tait | England | 06-Feb-1986 | 32(88) |
| 05-May-2018 | Michael Fitzgerald | New Zealand | 08-Feb-1987 | 31(86) |
| 14-Apr-2018 | Tom Youngs | England | 28-Jan-1987 | 31(76) |
| 05-May-2018 | Dan Cole | England | 09-May-1987 | 30(362) |
| 04-Mar-2018 | Logoviki Mulipola | Samoa | 11-Mar-1987 | 30(359) |
| 25-Nov-2017 | Patric Cilliers | South Africa | 03-Mar-1987 | 30(268) |
| 27-Apr-2018 | Adam Thompstone | England | 04-Sep-1987 | 30(236) |
| 05-May-2018 | Sione Kalamafoni | Tonga | 18-May-1988 | 29(352) |
| 25-Feb-2018 | Gareth Owen | Wales | 05-Nov-1988 | 29(112) |
| 25-Mar-2018 | Greg Bateman | England | 20-Jun-1989 | 28(278) |
| 05-May-2018 | Ben Youngs | England | 05-Sep-1989 | 28(242) |
| 05-May-2018 | Graham Kitchener | England | 29-Sep-1989 | 28(218) |
| 27-Apr-2018 | Matt Toomua | Australia | 02-Jan-1990 | 28(115) |
| 05-May-2018 | Jonny May | England | 01-Apr-1990 | 28(34) |
| 14-Apr-2018 | Sam Harrison | England | 07-Apr-1990 | 28(7) |
| 10-Feb-2018 | Joe Ford | England | 04-Jun-1990 | 27(251) |
| 05-May-2018 | Telusa Veainu | Tonga | 26-Dec-1990 | 27(130) |
| 23-Sep-2017 | Dominic Ryan | Ireland | 28-May-1990 | 27(118) |
| 05-May-2018 | Manu Tuilagi | England | 18-May-1991 | 26(353) |
| 05-May-2018 | Mike Williams | England | 04-Nov-1991 | 26(183) |
| 27-Apr-2018 | Luke Hamilton | Scotland | 07-Jan-1992 | 26(111) |
| 05-May-2018 | Jonah Holmes | Wales | 24-Jul-1992 | 25(285) |
| 05-May-2018 | George Ford | England | 16-Mar-1993 | 25(50) |
| 10-Feb-2018 | Nick Malouf | Australia | 19-Mar-1993 | 24(328) |
| 14-Apr-2018 | Valentino Mapapalangi | Tonga | 18-Jul-1993 | 24(270) |
| 29-Oct-2017 | Dominic Barrow | England | 19-Mar-1993 | 24(224) |
| 07-Oct-2017 | George McGuigan | Ireland | 30-Mar-1993 | 24(191) |
| 30-Sep-2017 | Harry Wells | England | 29-Sep-1993 | 24(1) |
| 25-Nov-2017 | Harry Thacker | England | 18-Feb-1994 | 23(280) |
| 05-May-2018 | Ellis Genge | England | 16-Feb-1995 | 23(78) |
| 16-Sep-2017 | Joe Maksymiw | England | 20-Sep-1995 | 21(362) |
| 02-Dec-2017 | William Evans | England | 28-Jan-1997 | 20(308) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).