| 02 Feb 18 | r01        | Italy U20 RugbyItaly U20 Rug | 17 - 27 | England U20 RugbyEngland U20 R |
| 02 Feb 18 | r01        | France U20 RugbyFrance U20 Ru | 34 - 24 | Ireland U20 RugbyIreland U20 R |
| 02 Feb 18 | r01        | Wales U20 RugbyWales U20 Rug | 36 - 3 | Scotland U20 RugbyScotland U20 |
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| 09 Feb 18 | r02        | Ireland U20 RugbyIreland U20 R | 38 - 34 | Italy U20 RugbyItaly U20 Rug |
| 09 Feb 18 | r02        | England U20 RugbyEngland U20 R | 37 - 12 | Wales U20 RugbyWales U20 Rug |
| 09 Feb 18 | r02        | Scotland U20 RugbyScotland U20 | 19 - 69 | France U20 RugbyFrance U20 Ru |
| |
| 23 Feb 18 | r03        | France U20 RugbyFrance U20 Ru | 78 - 12 | Italy U20 RugbyItaly U20 Rug |
| 23 Feb 18 | r03        | Ireland U20 RugbyIreland U20 R | 38 - 41 | Wales U20 RugbyWales U20 Rug |
| 23 Feb 18 | r03        | Scotland U20 RugbyScotland U20 | 24 - 17 | England U20 RugbyEngland U20 R |
| |
| 09 Mar 18 | r04        | Ireland U20 RugbyIreland U20 R | 30 - 25 | Scotland U20 RugbyScotland U20 |
| 09 Mar 18 | r04        | Wales U20 RugbyWales U20 Rug | 7 - 18 | Italy U20 RugbyItaly U20 Rug |
| 09 Mar 18 | r04        | France U20 RugbyFrance U20 Ru | 6 - 22 | England U20 RugbyEngland U20 R |
| |
| 16 Mar 18 | r05        | Italy U20 RugbyItaly U20 Rug | 45 - 31 | Scotland U20 RugbyScotland U20 |
| 16 Mar 18 | r05        | England U20 RugbyEngland U20 R | 48 - 15 | Ireland U20 RugbyIreland U20 R |
| 16 Mar 18 | r05        | Wales U20 RugbyWales U20 Rug | 3 - 24 | France U20 RugbyFrance U20 Ru |