| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Luke Pearce | 12 | 2 | - | - | 6 |
| James Doleman | 1 | 1 | - | - | 1 |
| Andrew Lees | 2 | 1 | - | - | 2 |
| Marius Jonker | 3 | 1 | - | - | 3 |
| Garratt Williamson | 4 | 1 | - | - | 4 |
| Nigel Owens | 8 | 1 | - | - | 8 |
| Angus Gardner | 8 | 1 | - | - | 8 |
| Ben O'Keefe | 8 | 1 | - | - | 8 |
| Romain Poite | 10 | 1 | - | - | 10 |
| Glen Jackson | 10 | 1 | - | - | 10 |
| Wayne Barnes (Eng) | 15 | 1 | - | - | 15 |
P = Matches played,
C = Cards .