| Referee | P |  |
 |
 |
P / C |
|---|---|---|---|---|---|
| Nigel Owens | 3 | 2 | - | - | 1.5 |
| Matteo Liperini | 1 | 1 | - | - | 1 |
| Wayne Barnes (Eng) | 1 | 1 | - | - | 1 |
| James Jones | 1 | 1 | - | - | 1 |
| John Lacey | 2 | 1 | - | - | 2 |
| Marius Mitrea | 2 | 1 | - | - | 2 |
| Pierre Brousset | 2 | 1 | - | - | 2 |
| Alexandre Ruiz | 5 | 1 | - | - | 5 |
| Louren van der Merwe | 1 | - | - | 1 | 1 |
P = Matches played,
C = Cards .