| Glen Affric, East Inverness-shire | Scotland | 66 | 478.8 | 11 | < 2014 |
| Powis Castle Park (total), Montgomeryshire | Wales | 170 | 380.0 | 70 | 1994 - 2003 |
| Bushy Park & Home Park, Middlesex | England: South | 255 | 620.4 | 141 | 1996 - 2013 |
| New Forest, South Hampshire | England: South | 324 | 771.6 | 200 | < 2000 |
| Dunham Park (total), Cheshire | England: Mid | 151 | 464.2 | 60 | < 1977 |
| Dinefwr Deer Park, Carmarthenshire | Wales | 156 | 385.3 | 57 | < 1999 |
| Kennet Floodplain, Berkshire | England: South | 124 | 352.4 | 20 | 2003 |
| Milton-Lockhart Estate, Lanarkshire | Scotland | 55 | 356.4 | 12 | < 2009 |
| Parc Nanteos, Cardiganshire | Wales | 45 | 244.4 | 7 | < 1999 |
| Gregynog, Montgomeryshire | Wales | 69 | 249.3 | 10 | < 1996 |
| Coed Allt Craig Arth, Cardiganshire | Wales | 22 | 263.6 | 1 | < 1992 |
| Coed Mynachlog-fawr, Cardiganshire | Wales | 29 | 258.6 | 3 | < 1994 |
| Llanerchaeron Hall, Cardiganshire | Wales | 22 | 263.6 | 4 | 1991 - 2002 |
| Bailey Einion, Radnorshire | Wales | 20 | 590.0 | 3 | < 1998 |
| Windsor Forest, Berkshire | England: South | 363 | 765.8 | 254 | < 1998 |
| Gibside, County Durham | England: North | 83 | 400.0 | 13 | < 1992 |
| Cwm Llyfnant, Cardiganshire | Wales | 44 | 275.0 | 4 | < 2015 |
| Blickling Park (NT), East Norfolk | England: South | 117 | 376.9 | 43 | 1982 - 2019 |
| Barnes Common, Surrey | England: South | 81 | 550.6 | 40 | 2020 - 2024 |
| Ayr Gorge, Ayrshire | Scotland | 57 | 319.3 | 12 | 1960 - 2020 |
| Dinton Pastures Country Park, Berkshire | England: South | 145 | 503.4 | 52 | 1992 - 2024 |
| Old Wood of Drum, South Aberdeenshire | Scotland | 21 | 371.4 | 9 | 2023 - 2024 |
Saproxylic Quality Index