| Calke Abbey NT, Derbyshire | England: Mid | 165 | 427.3 | 81 | 1998 - 2004 |
| Buddon Wood (total), Leicestershire (with Rutland) | England: Mid | 124 | 397.6 | 36 | < 1988 |
| Forest of Dean, West Gloucestershire | England: Mid | 89 | 410.1 | 30 | 1965 - 1998 |
| Cobham & Ashenbank Woods, West Kent | England: South | 105 | 369.5 | 33 | < 1998 |
| Cranborne Chase, South Wiltshire | England: South-West | 45 | 304.4 | 7 | 1994 - 2004 |
| Bradgate Park (total), Leicestershire (with Rutland) | England: Mid | 84 | 356.0 | 29 | < 1998 |
| Allt-yr-esgair, Breconshire | Wales | 57 | 335.1 | 15 | < 2000 |
| Ashenbank Wood, West Kent | England: South | 57 | 310.5 | 12 | < 2014 |
| Coed Nant Llolwyn, Cardiganshire | Wales | 46 | 237.0 | 2 | < 1998 |
| Langley Wood, South Wiltshire | England: South-West | 67 | 403.0 | 23 | 1980 - 2005 |
| Bushy Park & Home Park, Middlesex | England: South | 255 | 623.5 | 148 | 1996 - 2013 |
| Central Lincs. Limewoods, North Lincolnshire | England: Mid | 123 | 343.9 | 25 | < 1998 |
| Monks Wood NNR, Huntingdonshire | England: Mid | 157 | 415.9 | 48 | < 1973 |
| New Forest, South Hampshire | England: South | 324 | 774.1 | 207 | < 2000 |
| Oakwood Pastures, Staffordshire | England: Mid | 69 | 310.1 | 19 | < 2002 |
| The Oaks, Kingston Lacy, Dorset | England: South-West | 72 | 272.2 | 12 | 2000 - 2001 |
| Rotherfield Park, North Hampshire | England: South | 121 | 327.3 | 27 | 2002 |
| Snelsmore Common, Berkshire | England: South | 71 | 215.5 | 9 | 2003 |
| Staverton Park, East Suffolk | England: South | 106 | 419.8 | 55 | < 1986 |
| Thursley Commons, Surrey | England: South | 128 | 371.9 | 34 | < 2002 |
| Woolmer Forest, North Hampshire | England: South | 97 | 291.8 | 16 | 1950 - 2003 |
| Croome Park, Worcestershire | England: Mid | 110 | 560.0 | 62 | < 1999 |
| Epping Forest, South Essex | England: South | 252 | 544.4 | 128 | < 1979 |
| Shrubland Estate, East Suffolk | England: South | 91 | 498.9 | 38 | 1975 - 2005 |
| Bookham Common (total), Surrey | England: South | 208 | 464.9 | 84 | < 2001 |
| Esher Commons (total), Surrey | England: South | 234 | 496.6 | 91 | < 2002 |
| Box Hill, Surrey | England: South | 225 | 552.0 | 67 | < 1997 |
| Dunham Park (total), Cheshire | England: Mid | 151 | 464.2 | 60 | < 1977 |
| Ebernoe Common, West Sussex | England: South | 141 | 497.9 | 53 | < 2011 |
| Hatchlands Park, Surrey | England: South | 164 | 406.1 | 71 | < 2002 |
| 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 |
| Buxted Park, East Sussex | England: South | 134 | 400.7 | 43 | < 1999 |
| Chiddingfold Woods, Surrey | England: South | 164 | 371.3 | 37 | < 2003 |
| Bedford Purlieus Wood NNR, Huntingdonshire | England: Mid | 68 | 411.8 | 14 | 1970 - 1995 |
| Dingestow Court, Monmouthshire | Wales | 52 | 284.6 | 5 | 2007 - 2014 |
| Bramshott Chase, Surrey | England: South | 138 | 337.0 | 34 | 1998 - 2003 |
| Ash Ranges, Surrey | England: South | 121 | 330.6 | 25 | 1997 - 2003 |
| Llanover Park, Monmouthshire | Wales | 118 | 342.4 | 37 | < 1996 |
| Mill Bank, Penallt, Monmouthshire | Wales | 43 | 297.7 | 9 | < 2014 |
| Penallt Woods, Monmouthshire | Wales | 57 | 291.2 | 11 | 2007 - 2013 |
| Bentley Park Wood, Warwickshire | England: Mid | 62 | 277.4 | 12 | < 2000 |
| Stansted Woodlands & Veteran Trees, North Essex | England: South | 43 | 295.3 | 6 | < 2014 |
| Gregynog, Montgomeryshire | Wales | 69 | 249.3 | 10 | < 1996 |
| Coedydd Afon Gwynant, Merionethshire | Wales | 26 | 253.8 | 7 | 1998 |
| Llanerchaeron Hall, Cardiganshire | Wales | 22 | 263.6 | 4 | 1991 - 2002 |
| Nicholaston Woods, Glamorganshire | Wales | 21 | 323.8 | 8 | < 1993 |
| Windsor Forest, Berkshire | England: South | 363 | 768.0 | 261 | < 1998 |
| Forest of Bere, South Hampshire | England: South | 108 | 468.5 | 42 | < 1975 |
| Pilton Wood, North Devon | England: South-West | 43 | 279.1 | 8 | < 1999 |
| Parc Lodge, Monmouthshire | Wales | 30 | 230.0 | 7 | 1991 - 2002 |
| Esher Commons (post 1980), Surrey | England: South | 172 | 370.9 | 54 | 1980 - 2002 |
| Kemerton Estate, Worcestershire | England: Mid | 170 | 441.8 | 81 | 1992 - 2014 |
| Coedydd Mawddach, Merionethshire | Wales | 36 | 258.3 | 10 | 1975 - 2015 |
| Auchinleck Estate, Ayrshire | Scotland | 39 | 284.6 | 9 | 2013 - 2016 |
| Berrington Hall, Herefordshire | England: Mid | 49 | 391.8 | 13 | 1984 - 2011 |
| Croome Estate, Worcestershire | England: Mid | 175 | 601.7 | 116 | 1995 - 2016 |
| Shotover Hill, Oxfordshire | England: South | 155 | 441.3 | 71 | 1999 - 2017 |
| Wyre Forest , Worcestershire | England: Mid | 126 | 415.9 | 39 | 1980 - 2017 |
| Dartington Hall Estate, South Devon | England: South-West | 89 | 377.5 | 14 | 2010 - 2017 |
| Hatfield Forest, North Essex | England: South | 245 | 571.8 | 145 | 1986 - 2018 |
| Woodwalton Fen NNR, Huntingdonshire | England: Mid | 57 | 315.8 | 16 | 1961 - 2019 |
| Felbrigg Hall Estate (NT), East Norfolk | England: South | 135 | 382.2 | 45 | 1988 - 2018 |
| Brownsea Island NT, Dorset | England: South-West | 62 | 316.1 | 15 | 2005 - 2015 |
| Woolavington, North Somerset | England: South-West | 12 | 225.0 | 3 | 2020 |
| Flatford Mill and Dedham Vale (NT), East Suffolk | England: South | 74 | 437.8 | 19 | 1995 - 2020 |
| Ashridge Estate (NT), Hertfordshire | England: South | 234 | 555.6 | 110 | 1986 - 2020 |
| Nettlecombe Park, South Somerset | England: South-West | 129 | 355.0 | 57 | 1988 - 2019 |
| Auchinleck Estate, Ayrshire | Scotland | 41 | 285.4 | 9 | 2000 - 2021 |
| East Chatteris, Cambridgeshire | England: South | 63 | 314.3 | 16 | 2015 |
| Bainton Heath, Northamptonshire | England: Mid | 64 | 387.5 | 17 | 2011 |
| Petworth Deer Park (NT), West Sussex | England: South | 195 | 504.6 | 92 | 1988 - 2020 |
| Chirk Castle Park (NT), Denbighshire | Wales | 194 | 404.6 | 79 | 1993 - 2018 |
| Wye Valley Woods SAC, Monmouthshire | Wales | 132 | 448.5 | 49 | 1994 - 2018 |
| Combermere Park, Cheshire | England: Mid | 83 | 406.0 | 42 | 2022 |
| Holmwood, Surrey | England: South | 47 | 297.9 | 7 | 2015 - 2022 |
| Capstone, East Kent | England: South | 58 | 251.7 | 5 | 2000 - 2021 |
| Ickworth Park NT, West Suffolk | England: South | 176 | 502.3 | 81 | 1986 - 2022 |
| Panshanger Park (1990-2022), Hertfordshire | England: South | 156 | 535.9 | 99 | 1990 - 2022 |
| Sheringham Park (NT), East Norfolk | England: South | 88 | 326.1 | 25 | 1987 - 2022 |
| Ham Lands, Surrey | England: South | 67 | 379.1 | 16 | 2010 - 2023 |
| Clumber Park (NT), Nottinghamshire | England: Mid | 177 | 422.0 | 75 | 1990 - 2023 |
| Sydenham Hill & Dulwich Woods, Surrey | England: South | 92 | 387.0 | 30 | 1997 - 2023 |
| Stowe (NT, School and Golf Course), Buckinghamshire | England: South | 142 | 516.9 | 76 | < 2023 |
| Ashtead Common NNR, Surrey | England: South | 282 | 636.5 | 168 | < 2023 |
| 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 |
| Barnes Common, Surrey | England: South | 81 | 560.5 | 47 | 2020 - 2024 |
| Horner Woods NNR, South Somerset | England: South-West | 88 | 306.8 | 27 | 1998 - 2015 |
| Rutland Water Nature Reserve, Leicestershire (with Rutland) | England: Mid | 68 | 255.9 | 8 | 2021 - 2022 |
| Ayr Gorge, Ayrshire | Scotland | 57 | 319.3 | 12 | 1960 - 2020 |
| Wimpole Hall Estate (NT), Cambridgeshire | England: South | 203 | 502.0 | 97 | 1986 - 2023 |
| Wicken Fen (NT), Cambridgeshire | England: South | 152 | 447.4 | 59 | 1980 - 2023 |
| Dinton Pastures Country Park, Berkshire | England: South | 145 | 503.4 | 52 | 1992 - 2024 |
Saproxylic Quality Index