Harry Allen History
| Club | Country | Position | NO | From | To |
|---|---|---|---|---|---|
| Saracens | England | Hooker | 01/08/2008 | 01/07/2012 | |
| Blackheath | England | Hooker | 01/08/2009 | 01/06/2011 | |
| Bedford Blues | England | Hooker | 01/09/2011 | 01/06/2012 | |
| London Scottish | England | Hooker | 01/07/2012 | 01/06/2013 | |
| Harlequins | England | Hooker | 20/01/2013 | 01/08/2014 | |
| London Scottish | England | Hooker | 01/10/2013 | 01/06/2014 | |
| London Irish | England | Hooker | 01/08/2014 | 01/07/2015 | |
| London Welsh | England | Hooker | 01/07/2015 | 01/07/2016 | |
| Doncaster Knights | England | Hooker | 01/07/2016 | 01/07/2017 |
NO = Player number .