| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 15-Feb-2004 |  Sergio Parisse | Italy | Italy | 12-Sep-1983 | 20(156) |
| 14-Feb-2004 |  Tom Philip | Scotland | Scotland | 25-Jun-1983 | 20(234) |
| 21-Feb-2004 | Mirco Bergamasco | Italy | Italy | 23-Feb-1983 | 20(363) |
| 14-Feb-2004 | Allister Hogg | Scotland | Scotland | 20-Jan-1983 | 21(25) |
| 22-Feb-2004 |  Jonathan Thomas | Wales | Wales | 27-Dec-1982 | 21(57) |
| 06-Mar-2004 | Gonzalo Canale | Italy | Italy | 11-Nov-1982 | 21(116) |
| 14-Feb-2004 |  Frederic Michalak | France | France | 16-Oct-1982 | 21(121) |
| 14-Feb-2004 | Chris Cusiter | Scotland | Scotland | 13-Jun-1982 | 21(246) |
| 21-Feb-2004 | Matteo Barbini | Italy | Italy | 08-Jun-1982 | 21(258) |
| 15-Feb-2004 |  Olly Barkley | England | England | 28-Nov-1981 | 22(79) |
| 15-Feb-2004 | Martin Castrogiovanni | Italy | Italy | 21-Oct-1981 | 22(117) |
| 27-Mar-2004 | Carlo Antonio Del Fava | Italy | Italy | 01-Jul-1981 | 22(270) |
| 14-Feb-2004 | Vincent Clerc | France | France | 07-May-1981 | 22(283) |
| 15-Feb-2004 | Andrea Masi | Italy | Italy | 30-Mar-1981 | 22(322) |
| 21-Feb-2004 | Julien Peyrelongue | France | France | 02-Apr-1981 | 22(325) |
| 14-Feb-2004 | Adam Jones | Wales | Wales | 08-Mar-1981 | 22(343) |
| 21-Feb-2004 | Simon Webster | Scotland | Scotland | 08-Mar-1981 | 22(350) |
| 07-Mar-2004 | Gethin Jenkins | Wales | Wales | 17-Nov-1980 | 23(110) |
| 07-Mar-2004 | Michael Owen | Wales | Wales | 07-Nov-1980 | 23(120) |
| 14-Feb-2004 | Pascal Pape | France | France | 05-Oct-1980 | 23(131) |
| 21-Feb-2004 | Chris Jones | England | England | 24-Aug-1980 | 23(180) |
| 21-Mar-2004 | Dmitri Yachvili | France | France | 19-Sep-1980 | 23(183) |
| 15-Feb-2004 | Marco Bortolami | Italy | Italy | 12-Jun-1980 | 23(247) |
| 14-Feb-2004 | Rhys Williams | Wales | Wales | 23-Feb-1980 | 23(356) |
| 14-Feb-2004 | Imanol Harinordoquy | France | France | 20-Feb-1980 | 23(359) |
| 14-Feb-2004 | Bruce Douglas | Scotland | Scotland | 10-Feb-1980 | 24(4) |
| 14-Feb-2004 |  Gordon D'Arcy | Ireland | Ireland | 10-Feb-1980 | 24(4) |
| 14-Feb-2004 | Andrew Henderson | Scotland | Scotland | 03-Feb-1980 | 24(11) |
| 14-Feb-2004 | Paul O'Connell | Ireland | Ireland | 20-Oct-1979 | 24(117) |
| 06-Mar-2004 | Steve Borthwick | England | England | 12-Oct-1979 | 24(146) |
| 14-Feb-2004 | Simon Taylor | Scotland | Scotland | 17-Aug-1979 | 24(181) |
| 14-Feb-2004 | Simon Danielli | Scotland | Scotland | 08-Jul-1979 | 24(221) |
| 14-Feb-2004 | Dafydd Jones | Wales | Wales | 24-Jun-1979 | 24(235) |
| 22-Feb-2004 | Robert Sidoli | Wales | Wales | 21-Jun-1979 | 24(246) |
| 14-Feb-2004 | Damien Traille | France | France | 12-Jun-1979 | 24(247) |
| 14-Feb-2004 | Gareth Cooper | Wales | Wales | 07-May-1979 | 24(283) |
| 15-Feb-2004 | Iain Balshaw | England | England | 18-Apr-1979 | 24(303) |
| 22-Feb-2004 | Donncha O'Callaghan | Ireland | Ireland | 24-Mar-1979 | 24(335) |
| 22-Feb-2004 | Brian O'Driscoll | Ireland | Ireland | 21-Jan-1979 | 25(32) |
| 14-Feb-2004 | Duncan Jones | Wales | Wales | 18-Sep-1978 | 25(149) |
| 15-Feb-2004 | Ben Cohen | England | England | 14-Sep-1978 | 25(154) |
| 20-Mar-2004 | Mike Tindall | England | England | 18-Oct-1978 | 25(154) |
| 06-Mar-2004 | Allan Jacobson | Scotland | Scotland | 22-Sep-1978 | 25(166) |
| 14-Feb-2004 | Yannick Jauzion | France | France | 28-Jul-1978 | 25(201) |
| 14-Feb-2004 | Shane Horgan | Ireland | Ireland | 18-Jul-1978 | 25(211) |
| 15-Feb-2004 | Steve Thompson | England | England | 15-Jul-1978 | 25(215) |
| 15-Feb-2004 | Santiago Dellape | Italy | Italy | 09-May-1978 | 25(282) |
| 27-Mar-2004 | Dan Parks | Scotland | Scotland | 26-May-1978 | 25(306) |
| 21-Feb-2004 | Jason White | Scotland | Scotland | 17-Apr-1978 | 25(310) |
| 14-Feb-2004 | Chris Paterson | Scotland | Scotland | 30-Mar-1978 | 25(321) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).