| Calke Abbey NT, Derbyshire | England: Mid | 165 | 422.4 | 74 | 1998 - 2004 |
| Powis Castle Park (total), Montgomeryshire | Wales | 170 | 380.0 | 70 | 1994 - 2003 |
| Great Ridge, South Wiltshire | England: South-West | 46 | 423.9 | 12 | 1980 - 2004 |
| Bushy Park & Home Park, Middlesex | England: South | 255 | 620.4 | 141 | 1996 - 2013 |
| New Forest, South Hampshire | England: South | 324 | 771.6 | 200 | < 2000 |
| River Soar, Leicestershire (with Rutland) | England: Mid | 66 | 304.5 | 12 | < 1980 |
| Virginia Water Woods, Berkshire | England: South | 73 | 464.4 | 33 | 2003 |
| Dunham Massey Park (Greater), Cheshire | England: Mid | 84 | 307.1 | 27 | < 1992 |
| Langley Park, Buckinghamshire | England: South | 152 | 649.3 | 110 | 1979 - 2008 |
| Richmond Park (total), Surrey | England: South | 253 | 628.5 | 157 | 1950 - 2006 |
| Epping Forest, South Essex | England: South | 252 | 544.4 | 128 | < 1979 |
| Hampton Court Park, Middlesex | England: South | 87 | 489.7 | 41 | 2011 - 2013 |
| Arundel Park, West Sussex | England: South | 130 | 458.5 | 53 | < 1999 |
| Dinefwr Deer Park, Carmarthenshire | Wales | 156 | 385.3 | 57 | < 1999 |
| Hardwick Park (NT), Derbyshire | England: Mid | 115 | 350.4 | 37 | 1984 - 2004 |
| Windsor Forest, Berkshire | England: South | 363 | 765.8 | 254 | < 1998 |
| Richmond Park (1980-2006), Surrey | England: South | 205 | 535.1 | 110 | 1980 - 2006 |
| Burley Wood, Leicestershire (with Rutland) | England: Mid | 72 | 275.0 | 12 | < 1988 |
| Burley-on-the-Hill Estate, Leicestershire (with Rutland) | England: Mid | 90 | 303.3 | 19 | 1988 - 2016 |
| Shotover Hill, Oxfordshire | England: South | 155 | 441.3 | 71 | 1999 - 2017 |
| Hatfield Forest, North Essex | England: South | 245 | 568.6 | 138 | 1986 - 2018 |
| Grace Dieu Wood, Leicestershire (with Rutland) | England: Mid | 39 | 205.1 | 7 | 1927 - 2012 |
| Felbrigg Hall Estate (NT), East Norfolk | England: South | 135 | 382.2 | 45 | 1988 - 2018 |
| Attingham Park NT, Shropshire | England: Mid | 102 | 312.7 | 37 | 1985 - 2013 |
| Blickling Park (NT), East Norfolk | England: South | 117 | 376.9 | 43 | 1982 - 2019 |
| Chirk Castle Park (NT), Denbighshire | Wales | 194 | 404.6 | 79 | 1993 - 2018 |
| 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 |
| Studley Park, Mid-west Yorkshire | England: North | 43 | 372.1 | 19 | 2017 - 2023 |
| Stowe (NT, School and Golf Course), Buckinghamshire | England: South | 142 | 511.3 | 69 | < 2023 |
| Ashtead Common NNR, Surrey | England: South | 282 | 633.7 | 161 | < 2023 |
| Bredon Hill, Worcestershire | England: Mid | 218 | 613.8 | 140 | 1970 - 2021 |
| Weald Country Park (2010), South Essex | England: South | 44 | 579.5 | 31 | 2010 |
| Weald Country Park (total), South Essex | England: South | 128 | 495.3 | 63 | < 2010 |
| Wimpole Hall Estate (NT), Cambridgeshire | England: South | 203 | 498.0 | 90 | 1986 - 2023 |
| Wicken Fen (NT), Cambridgeshire | England: South | 152 | 447.4 | 59 | 1980 - 2023 |
| Turnworth Common, Dorset | England: South-West | 120 | 475.0 | 62 | 2018 - 2023 |
| Dyffryn Gardens, Glamorganshire | Wales | 58 | 341.4 | 22 | 2023 - 2024 |
Saproxylic Quality Index