| Penalties | Club | VS Club | Date | |
|---|---|---|---|---|
| 5 | Saracens | Sale Sharks | 10-11-2017 | Match details |
| 4 | Bath | London Irish | 04-11-2017 | Match details |
| 4 | Northampton Saints | Bath | 09-03-2018 | Match details |
| 4 | Ospreys | Cardiff Blues | 17-11-2017 | Match details |
| 4 | Sale Sharks | Saracens | 10-11-2017 | Match details |
| 3 | Exeter Chiefs | Bath | 30-03-2018 | Match details |
| 3 | Leicester Tigers | Gloucester | 04-11-2017 | Match details |
| 3 | Cardiff Blues | Ospreys | 17-11-2017 | Match details |
| 2 | Scarlets | Sale Sharks | 02-02-2018 | Match details |
| 2 | Harlequins | Saracens | 05-11-2017 | Match details |
| 2 | Gwent Dragons | Scarlets | 17-11-2017 | Match details |
| 2 | Worcester Warriors | Gwent Dragons | 02-02-2018 | Match details |
| 1 | London Wasps | Newcastle Falcons | 04-11-2017 | Match details |
| 1 | Newcastle Falcons | London Wasps | 04-11-2017 | Match details |
| 1 | Gloucester | Leicester Tigers | 04-11-2017 | Match details |
