| Calke Abbey NT, Derbyshire | England: Mid | 165 | 422.4 | 74 | 1998 - 2004 |
| Forest of Dean, West Gloucestershire | England: Mid | 89 | 410.1 | 30 | 1965 - 1998 |
| Allt-yr-esgair, Breconshire | Wales | 57 | 335.1 | 16 | < 2000 |
| Bowcastle Farm Orchards, Worcestershire | England: Mid | 50 | 336.0 | 14 | < 2005 |
| Monkfield Wood, Cambridgeshire | England: South | 27 | 251.9 | 3 | < 1998 |
| Monks Wood NNR, Huntingdonshire | England: Mid | 157 | 415.9 | 48 | < 1973 |
| Sandall Beat, South-west Yorkshire | England: North | 64 | 271.9 | 5 | < 2000 |
| Savernake Forest, South Wiltshire | England: South-West | 111 | 436.9 | 50 | < 2004 |
| Moccas Park, Herefordshire | England: Mid | 239 | 566.5 | 139 | < 1998 |
| Epping Forest, South Essex | England: South | 252 | 544.4 | 129 | < 1979 |
| Bookham Common (total), Surrey | England: South | 208 | 464.9 | 84 | < 2001 |
| Box Hill, Surrey | England: South | 225 | 552.0 | 68 | < 1997 |
| Bookham Common (post-1980), Surrey | England: South | 176 | 440.9 | 61 | 1980 - 2001 |
| Stanford PTA, West Norfolk | England: South | 183 | 416.9 | 74 | 1980 - 2009 |
| Cambourne Woods, Cambridgeshire | England: South | 39 | 402.6 | 10 | < 1998 |
| Chiddingfold Woods, Surrey | England: South | 164 | 371.3 | 37 | < 2003 |
| Dinefwr Deer Park, Carmarthenshire | Wales | 156 | 385.3 | 57 | < 1999 |
| Kennet Floodplain, Berkshire | England: South | 124 | 352.4 | 20 | 2003 |
| Bentley Park Wood, Warwickshire | England: Mid | 62 | 277.4 | 12 | < 2000 |
| Erddig, Denbighshire | Wales | 67 | 297.0 | 15 | < 1999 |
| 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 |
| Old Cilgwyn, Cardiganshire | Wales | 64 | 265.6 | 13 | < 1998 |
| Plas Gogerddan/Coed allt-ddel, Cardiganshire | Wales | 21 | 147.6 | 0 | < 1998 |
| Windsor Forest, Berkshire | England: South | 363 | 765.8 | 255 | < 1998 |
| Forest of Bere, South Hampshire | England: South | 108 | 468.5 | 42 | < 1975 |
| Trent Valley , Nottinghamshire | England: Mid | 101 | 332.7 | 26 | 1997 - 2015 |
| Kemerton Estate, Worcestershire | England: Mid | 170 | 437.1 | 75 | 1992 - 2014 |
| Berrington Hall, Herefordshire | England: Mid | 49 | 391.8 | 13 | 1984 - 2011 |
| Croft Castle, Herefordshire | England: Mid | 121 | 404.1 | 52 | < 2012 |
| Croome Estate, Worcestershire | England: Mid | 175 | 597.1 | 110 | 1995 - 2016 |
| Wyre Forest , Worcestershire | England: Mid | 126 | 415.9 | 39 | 1980 - 2017 |
| Hatfield Forest, North Essex | England: South | 245 | 568.6 | 139 | 1986 - 2018 |
| Ashridge Estate (NT), Hertfordshire | England: South | 234 | 555.6 | 111 | 1986 - 2020 |
| East Chatteris, Cambridgeshire | England: South | 63 | 314.3 | 16 | 2015 |
| Bainton Heath, Northamptonshire | England: Mid | 64 | 387.5 | 17 | 2011 |
| Birchall & Holwell Park Woods, Hertfordshire | England: South | 65 | 286.2 | 8 | 2014 - 2015 |
| Petworth Deer Park (NT), West Sussex | England: South | 195 | 500.5 | 85 | 1988 - 2020 |
| Ickworth Park NT, West Suffolk | England: South | 176 | 497.7 | 74 | 1986 - 2022 |
| Ham Lands, Surrey | England: South | 67 | 379.1 | 16 | 2010 - 2023 |
| Ashtead Common NNR, Surrey | England: South | 282 | 633.7 | 162 | < 2023 |
| Burnham Beeches (inc. Dorneywood NT and Huntswood Farm), Buckinghamshire | England: South | 284 | 624.6 | 176 | < 2022 |
| Rutland Water Nature Reserve, Leicestershire (with Rutland) | England: Mid | 68 | 255.9 | 8 | 2021 - 2022 |
| Wimpole Hall Estate (NT), Cambridgeshire | England: South | 203 | 498.0 | 91 | 1986 - 2023 |
| Wicken Fen (NT), Cambridgeshire | England: South | 152 | 447.4 | 59 | 1980 - 2023 |
| Burnham Beeches (s.s.), Buckinghamshire | England: South | 263 | 592.0 | 155 | < 2022 |
| Maxey Cut, Northamptonshire | England: Mid | 58 | 332.8 | 17 | 2023 - 2024 |
| Bredon Hill, Worcestershire | England: Mid | 230 | 597.0 | 145 | 1970 - 2025 |
Saproxylic Quality Index