| Calke Abbey NT, Derbyshire | England: Mid | 165 | 427.3 | 81 | 1998 - 2004 |
| Powis Castle Park (total), Montgomeryshire | Wales | 170 | 380.0 | 70 | 1994 - 2003 |
| Grimsthorpe Park, South Lincolnshire | England: Mid | 147 | 467.3 | 84 | < 2014 |
| Bushy Park & Home Park, Middlesex | England: South | 255 | 623.5 | 148 | 1996 - 2013 |
| Mottisfont Abbey, South Hampshire | England: South | 36 | 397.2 | 18 | < 1998 |
| New Forest, South Hampshire | England: South | 324 | 774.1 | 207 | < 2000 |
| Walcot Park, Shropshire | England: Mid | 39 | 310.3 | 11 | < 1991 |
| Richmond Park (total), Surrey | England: South | 253 | 631.6 | 164 | 1950 - 2006 |
| Moccas Park, Herefordshire | England: Mid | 239 | 569.9 | 145 | < 1998 |
| Cliveden NT, Buckinghamshire | England: South | 71 | 512.7 | 33 | 2008 |
| Icklingham Plains Area, West Suffolk | England: South | 75 | 448.0 | 38 | 1976 - 1997 |
| Mersham Hatch Estate, East Kent | England: South | 115 | 415.7 | 39 | < 1998 |
| Stanford PTA, West Norfolk | England: South | 183 | 416.9 | 74 | 1980 - 2009 |
| Highgate Wood, Middlesex | England: South | 107 | 408.4 | 36 | < 2002 |
| Stansted Woodlands & Veteran Trees, North Essex | England: South | 43 | 295.3 | 6 | < 2014 |
| Lawn Wood & Tortoiseshell Wood, South Lincolnshire | England: Mid | 49 | 277.6 | 11 | < 1998 |
| Windsor Forest, Berkshire | England: South | 363 | 768.0 | 261 | < 1998 |
| Richmond Park (1980-2006), Surrey | England: South | 205 | 539.0 | 117 | 1980 - 2006 |
| Croft Castle, Herefordshire | England: Mid | 121 | 410.7 | 59 | < 2012 |
| Borthwood Copse, Isle of Wight | England: South | 15 | 320.0 | 6 | 1982 - 2002 |
| Hatfield Forest, North Essex | England: South | 245 | 571.8 | 145 | 1986 - 2018 |
| Nettlecombe Park, South Somerset | England: South-West | 129 | 355.0 | 57 | 1988 - 2019 |
| Chirk Castle Park (NT), Denbighshire | Wales | 194 | 404.6 | 79 | 1993 - 2018 |
| Wye Valley Woods SAC, Monmouthshire | Wales | 132 | 448.5 | 49 | 1994 - 2018 |
| Little Doward Wood, West Gloucestershire | England: Mid | 80 | 402.5 | 36 | 2004 - 2021 |
| High Park, Blenheim Palace, Oxfordshire | England: South | 261 | 603.4 | 165 | 1950 - 2021 |
| Oxburgh Hall, West Norfolk | England: South | 96 | 456.3 | 43 | 2013 - 2022 |
| Burnham Beeches, Buckinghamshire | England: South | 263 | 595.1 | 161 | < 2022 |
| Abney Park Cemetery, Middlesex | England: South | 86 | 489.5 | 28 | 2006 - 2024 |
| Burnham Beeches (inc. Dorneywood NT and Huntswood Farm), Buckinghamshire | England: South | 284 | 627.5 | 182 | < 2022 |
| Bredon Hill, Worcestershire | England: Mid | 218 | 617.4 | 147 | 1970 - 2021 |
| Wimpole Hall Estate (NT), Cambridgeshire | England: South | 203 | 502.0 | 97 | 1986 - 2023 |
Saproxylic Quality Index