| Bushy Park & Home Park, Middlesex | England: South | 255 | 620.4 | 141 | 1996 - 2013 |
| Lullingstone Park, West Kent | England: South | 105 | 473.3 | 42 | < 1977 |
| Silwood Park, Berkshire | England: South | 159 | 613.2 | 86 | 1998 - 1999 |
| Langley Park, Buckinghamshire | England: South | 152 | 649.3 | 110 | 1979 - 2008 |
| Richmond Park (total), Surrey | England: South | 253 | 628.5 | 157 | 1950 - 2006 |
| Moccas Park, Herefordshire | England: Mid | 239 | 566.5 | 138 | < 1998 |
| Croome Park, Worcestershire | England: Mid | 110 | 560.0 | 62 | < 1999 |
| Cliveden NT, Buckinghamshire | England: South | 71 | 512.7 | 33 | 2008 |
| Shrubland Estate, East Suffolk | England: South | 91 | 498.9 | 38 | 1975 - 2005 |
| Icklingham Plains Area, West Suffolk | England: South | 75 | 437.3 | 31 | 1976 - 1997 |
| Stanford PTA, West Norfolk | England: South | 183 | 416.9 | 74 | 1980 - 2009 |
| Cambourne Woods, Cambridgeshire | England: South | 39 | 402.6 | 10 | < 1998 |
| Windsor Forest, Berkshire | England: South | 363 | 765.8 | 254 | < 1998 |
| Eastnor Park, Herefordshire | England: Mid | 93 | 393.5 | 46 | < 2010 |
| Hanbury Park, Worcestershire | England: Mid | 58 | 501.7 | 26 | 1998 - 2016 |
| Croome Estate, Worcestershire | England: Mid | 175 | 597.1 | 109 | 1995 - 2016 |
| Hatfield Forest, North Essex | England: South | 245 | 568.6 | 138 | 1986 - 2018 |
| Felbrigg Hall Estate (NT), East Norfolk | England: South | 135 | 382.2 | 45 | 1988 - 2018 |
| Blickling Park (NT), East Norfolk | England: South | 117 | 376.9 | 43 | 1982 - 2019 |
| Ashridge Estate (NT), Hertfordshire | England: South | 234 | 555.6 | 110 | 1986 - 2020 |
| Ickworth Park NT, West Suffolk | England: South | 176 | 497.7 | 74 | 1986 - 2022 |
| Panshanger Park (1990-2022), Hertfordshire | England: South | 156 | 530.8 | 92 | 1990 - 2022 |
| High Park, Blenheim Palace, Oxfordshire | England: South | 261 | 600.4 | 158 | 1950 - 2021 |
| Oxburgh Hall, West Norfolk | England: South | 96 | 447.9 | 36 | 2013 - 2022 |
| Thorndon Park SSSI, South Essex | England: South | 66 | 553.0 | 47 | 2023 |
| Burnham Beeches (inc. Dorneywood NT and Huntswood Farm), Buckinghamshire | England: South | 284 | 624.6 | 175 | < 2022 |
| Bredon Hill, Worcestershire | England: Mid | 218 | 613.8 | 140 | 1970 - 2021 |
| Oxburgh Hall (NT), West Norfolk | England: South | 63 | 409.5 | 20 | 2006 - 2018 |
| Burnham Beeches (s.s.), Buckinghamshire | England: South | 263 | 592.0 | 154 | < 2022 |
| Shorne Woods CP, West Kent | England: South | 36 | 386.1 | 11 | 2024 |
| Shorne Woods CP, West Kent | England: South | 36 | 386.1 | 11 | 2024 |
Saproxylic Quality Index