Head to Head
| Premiership Rugby Shield | 2017/09/11 18:30 | London Irish A v Harlequins | W | 7-45 |
| Premiership Rugby Shield | 2015/12/28 15:00 | Harlequins v London Irish A | W | 34-7 |
| Premiership Rugby Shield | 2014/12/15 19:30 | London Irish A v Harlequins | W | 7-12 |
| Premiership Rugby Shield | 2017/09/11 18:30 | London Irish A v Harlequins | W | 7-45 |
| Premiership Rugby Shield | 2015/12/28 15:00 | Harlequins v London Irish A | W | 34-7 |
| Premiership Rugby Shield | 2014/12/15 19:30 | London Irish A v Harlequins | W | 7-12 |