| Sherwood Forest, Nottinghamshire | England: Mid | 164 | 493.9 | 96 | 1960 - 2006 |
| Buddon Wood (total), Leicestershire (with Rutland) | England: Mid | 124 | 411.3 | 36 | < 1988 |
| Powis Castle Park (total), Montgomeryshire | Wales | 170 | 372.9 | 70 | 1994 - 2003 |
| Grimsthorpe Park, South Lincolnshire | England: Mid | 147 | 461.9 | 77 | < 2014 |
| Longdon Marsh, Worcestershire | England: Mid | 57 | 578.9 | 39 | 2000 - 2002 |
| New Forest, South Hampshire | England: South | 324 | 782.7 | 200 | < 2000 |
| Staverton Park, East Suffolk | England: South | 106 | 416.0 | 48 | < 1986 |
| Moccas Park, Herefordshire | England: Mid | 239 | 576.6 | 138 | < 1998 |
| Epping Forest, South Essex | England: South | 252 | 560.3 | 128 | < 1979 |
| Dinefwr Deer Park, Carmarthenshire | Wales | 156 | 362.8 | 57 | < 1999 |
| Windsor Forest, Berkshire | England: South | 363 | 801.7 | 254 | < 1998 |
| Croft Castle, Herefordshire | England: Mid | 121 | 399.2 | 52 | < 2012 |
| Hatfield Forest, North Essex | England: South | 245 | 591.4 | 138 | 1986 - 2018 |
| Dunham Massey Park (2021), Cheshire | England: Mid | 89 | 360.7 | 45 | 2021 |
| Chirk Castle Park (NT), Denbighshire | Wales | 194 | 396.4 | 79 | 1993 - 2018 |
| High Park, Blenheim Palace, Oxfordshire | England: South | 261 | 620.3 | 158 | 1950 - 2021 |
| Oxburgh Hall, West Norfolk | England: South | 96 | 459.4 | 36 | 2013 - 2022 |
| Stowe (NT, School and Golf Course), Buckinghamshire | England: South | 142 | 526.8 | 69 | < 2023 |
| Thorndon Park SSSI, South Essex | England: South | 66 | 580.3 | 47 | 2023 |
| Ashtead Common NNR, Surrey | England: South | 282 | 635.1 | 161 | < 2023 |
| Burnham Beeches, Buckinghamshire | England: South | 263 | 599.6 | 154 | < 2022 |
| Burnham Beeches (inc. Dorneywood NT and Huntswood Farm), Buckinghamshire | England: South | 284 | 640.1 | 175 | < 2022 |
Saproxylic Quality Index