| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Ian Tempest | 8 | 2 | - | - | 4 |
| Luke Pearce | 21 | 2 | - | - | 10.5 |
| Hamish Smales | 1 | 1 | - | - | 1 |
| Adam Leal | 2 | 1 | - | - | 2 |
| Marius Mitrea | 3 | 1 | - | - | 3 |
| Romain Poite | 5 | 1 | - | - | 5 |
| Nigel Owens | 5 | 1 | - | - | 5 |
| Tom Foley | 16 | 1 | - | - | 16 |
| Wayne Barnes (Eng) | 17 | 1 | - | - | 17 |
| Craig Maxwell Keys | 10 | - | - | 1 | 10 |
P = Matches played,
C = Cards .