| Swanton Novers, West Norfolk | England: South | 95 | 335.8 | 32 | 1981 - 2010 |
| Bushy Park & Home Park, Middlesex | England: South | 255 | 629.0 | 141 | 1996 - 2013 |
| New Forest, South Hampshire | England: South | 324 | 782.7 | 200 | < 2000 |
| Silwood Park, Berkshire | England: South | 159 | 605.0 | 86 | 1998 - 1999 |
| Richmond Park (total), Surrey | England: South | 253 | 644.3 | 157 | 1950 - 2006 |
| Cowdray Park, West Sussex | England: South | 121 | 543.0 | 58 | 2011 |
| The Mens, West Sussex | England: South | 139 | 441.0 | 56 | < 2010 |
| Dinefwr Deer Park, Carmarthenshire | Wales | 156 | 362.8 | 57 | < 1999 |
| Windsor Forest, Berkshire | England: South | 363 | 801.7 | 254 | < 1998 |
| Richmond Park (1980-2006), Surrey | England: South | 205 | 539.0 | 110 | 1980 - 2006 |
| Croft Castle, Herefordshire | England: Mid | 121 | 399.2 | 52 | < 2012 |
| Shotover Hill, Oxfordshire | England: South | 155 | 434.8 | 71 | 1999 - 2017 |
| Hatfield Forest, North Essex | England: South | 245 | 591.4 | 138 | 1986 - 2018 |
| Haddon Hall, Derbyshire | England: Mid | 28 | 403.6 | 10 | 2018 |
| Ashridge Estate (NT), Hertfordshire | England: South | 234 | 543.6 | 110 | 1986 - 2020 |
| Tatton Park (2021), Cheshire | England: Mid | 102 | 424.5 | 45 | 2021 |
| Tatton Park (2011-21), Cheshire | England: Mid | 122 | 425.4 | 53 | 2011 - 2021 |
| Petworth Deer Park (NT), West Sussex | England: South | 195 | 515.9 | 85 | 1988 - 2020 |
| Chirk Castle Park (NT), Denbighshire | Wales | 194 | 396.4 | 79 | 1993 - 2018 |
| Combermere Park, Cheshire | England: Mid | 83 | 383.1 | 42 | 2022 |
| Panshanger Park (1990-2022), Hertfordshire | England: South | 156 | 551.3 | 92 | 1990 - 2022 |
| Sheringham Park (NT), East Norfolk | England: South | 88 | 309.1 | 25 | 1987 - 2022 |
| High Park, Blenheim Palace, Oxfordshire | England: South | 261 | 620.3 | 158 | 1950 - 2021 |
| Haywood Oaks Farm , Nottinghamshire | England: Mid | 39 | 371.8 | 19 | 2023 |
| Oxburgh Hall, West Norfolk | England: South | 96 | 459.4 | 36 | 2013 - 2022 |
| 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 |
| Barnes Common, Surrey | England: South | 81 | 574.1 | 40 | 2020 - 2024 |
| Weald Country Park (2010), South Essex | England: South | 44 | 568.2 | 31 | 2010 |
| Weald Country Park (total), South Essex | England: South | 128 | 503.1 | 63 | < 2010 |
| Dinton Pastures Country Park, Berkshire | England: South | 143 | 488.1 | 52 | 1992 - 2023 |
| Turnworth Common, Dorset | England: South-West | 120 | 479.2 | 62 | 2018 - 2023 |
Saproxylic Quality Index