| Swanton Novers, West Norfolk | England: South | 95 | 337.9 | 32 | 1981 - 2010 |
| Powis Castle Park (total), Montgomeryshire | Wales | 170 | 380.0 | 70 | 1994 - 2003 |
| Bushy Park & Home Park, Middlesex | England: South | 255 | 620.4 | 141 | 1996 - 2013 |
| New Forest, South Hampshire | England: South | 324 | 771.6 | 200 | < 2000 |
| Oyster Wood, Surrey | England: South | 117 | 401.7 | 24 | < 1993 |
| Silwood Park, Berkshire | England: South | 159 | 613.2 | 86 | 1998 - 1999 |
| Richmond Park (total), Surrey | England: South | 253 | 628.5 | 157 | 1950 - 2006 |
| Moccas Park, Herefordshire | England: Mid | 239 | 566.5 | 138 | < 1998 |
| Epping Forest, South Essex | England: South | 252 | 544.4 | 128 | < 1979 |
| Arundel Park, West Sussex | England: South | 130 | 458.5 | 53 | < 1999 |
| Box Hill, Surrey | England: South | 225 | 552.0 | 67 | < 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 |
| Kedleston Park NT, Derbyshire | England: Mid | 143 | 378.3 | 58 | < 2014 |
| Dinefwr Deer Park, Carmarthenshire | Wales | 156 | 385.3 | 57 | < 1999 |
| St Fagans, Glamorganshire | Wales | 58 | 382.8 | 15 | 1997 - 1999 |
| Eridge Park, East Sussex | England: South | 80 | 310.0 | 17 | < 1999 |
| Mill Bank, Penallt, Monmouthshire | Wales | 43 | 297.7 | 9 | < 2014 |
| Penallt Woods, Monmouthshire | Wales | 57 | 291.2 | 11 | 2007 - 2013 |
| Brocton Coppice, Staffordshire | England: Mid | 88 | 317.0 | 35 | < 2000 |
| Clay Vallet Wood, Herefordshire | England: Mid | 58 | 298.3 | 11 | 2002 - 2003 |
| Lockhaugh Bank Wood, South Northumberland | England: North | 46 | 245.7 | 7 | < 1993 |
| Newborough Forest, Anglesey | Wales | 21 | 209.5 | 0 | < 2010 |
| Windsor Forest, Berkshire | England: South | 363 | 765.8 | 254 | < 1998 |
| Forest of Bere, South Hampshire | England: South | 108 | 468.5 | 42 | < 1975 |
| Richmond Park (1980-2006), Surrey | England: South | 205 | 535.1 | 110 | 1980 - 2006 |
| Shotover Hill, Oxfordshire | England: South | 155 | 441.3 | 71 | 1999 - 2017 |
| Lanhydrock Estate (NT), East Cornwall | England: South-West | 65 | 327.7 | 23 | < 2008 |
| Thorneythwaite, Cumberland | England: North | 50 | 348.0 | 6 | 2017 |
| Felbrigg Hall Estate (NT), East Norfolk | England: South | 135 | 382.2 | 45 | 1988 - 2018 |
| Tatton Park (2021), Cheshire | England: Mid | 102 | 432.4 | 45 | 2021 |
| Tatton Park (2011-21), Cheshire | England: Mid | 122 | 427.0 | 53 | 2011 - 2021 |
| Chirk Castle Park (NT), Denbighshire | Wales | 194 | 404.6 | 79 | 1993 - 2018 |
| Combermere Park, Cheshire | England: Mid | 83 | 406.0 | 42 | 2022 |
| Cwrt-yr-ala, Glamorganshire | Wales | 43 | 444.2 | 7 | < 1997 |
| Abney Park Cemetery, Middlesex | England: South | 86 | 489.5 | 28 | 2006 - 2024 |
| 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 |
| Burnham Beeches (s.s.), Buckinghamshire | England: South | 263 | 592.0 | 154 | < 2022 |
| Rydal Park & Nab Scar, Westmorland (with Furness) | England: North | 48 | 233.3 | 15 | 2023 |
| Old Wood of Drum, South Aberdeenshire | Scotland | 21 | 371.4 | 9 | 2023 - 2024 |
| Rydal Park & Nab Scar, Westmorland (with Furness) | England: North | 56 | 242.9 | 18 | 2023 - 2024 |
Saproxylic Quality Index