| Abernethy Estate, East Inverness-shire | Scotland | 142 | 678.2 | 18 | < 1994 |
| Black Wood of Rannoch, Mid Perthshire | Scotland | 74 | 563.5 | 8 | < 1990 |
| Gibside, County Durham | England: North | 83 | 400.0 | 13 | < 1992 |
| Bothwell Castle, Lanarkshire | Scotland | 38 | 355.3 | 13 | < 2011 |
| Auchinleck Estate, Ayrshire | Scotland | 39 | 284.6 | 9 | 2013 - 2016 |
| Bothwell Castle (update), Ayrshire | Scotland | 35 | 334.3 | 13 | 1960 - 2016 |
| Studley Royal, Mid-west Yorkshire | England: North | 100 | 342.0 | 33 | 1901 - 2016 |
| Thorneythwaite, Cumberland | England: North | 50 | 348.0 | 6 | 2017 |
| Chirk Castle Park (NT), Denbighshire | Wales | 194 | 404.6 | 79 | 1993 - 2018 |
Saproxylic Quality Index