| Duncombe Park NNR, North-east Yorkshire | England: North | 93 | 394.6 | 42 | < 2000 |
| New Forest, South Hampshire | England: South | 324 | 782.7 | 200 | < 2000 |
| Savernake Forest, South Wiltshire | England: South-West | 111 | 435.1 | 50 | < 2004 |
| Virginia Water Woods, Berkshire | England: South | 73 | 502.7 | 33 | 2003 |
| Cirencester Park, East Gloucestershire | England: Mid | 76 | 314.5 | 24 | < 1999 |
| Langley Park, Buckinghamshire | England: South | 152 | 686.2 | 110 | 1979 - 2008 |
| Moccas Park, Herefordshire | England: Mid | 239 | 576.6 | 138 | < 1998 |
| Parham Park, West Sussex | England: South | 81 | 523.5 | 42 | 1983 - 2012 |
| Cliveden NT, Buckinghamshire | England: South | 71 | 501.4 | 33 | 2008 |
| Arundel Park, West Sussex | England: South | 130 | 475.4 | 53 | < 1999 |
| Box Hill, Surrey | England: South | 225 | 550.7 | 67 | < 1997 |
| The Mens, West Sussex | England: South | 139 | 441.0 | 56 | < 2010 |
| Bachawy, Radnorshire | Wales | 24 | 391.7 | 7 | < 1998 |
| Nicholaston Woods, Glamorganshire | Wales | 21 | 314.3 | 8 | < 1993 |
| Glasbury, River Wye, Radnorshire | Wales | 25 | 316.0 | 8 | < 1999 |
| Windsor Forest, Berkshire | England: South | 363 | 801.7 | 254 | < 1998 |
| Harewood Forest, North Hampshire | England: South | 64 | 290.6 | 20 | < 1975 |
| Eastnor Park, Herefordshire | England: Mid | 93 | 412.9 | 46 | < 2010 |
| Kemerton Estate, Worcestershire | England: Mid | 170 | 435.3 | 74 | 1992 - 2014 |
| Croft Castle, Herefordshire | England: Mid | 121 | 399.2 | 52 | < 2012 |
| Croome Estate, Worcestershire | England: Mid | 175 | 616.6 | 109 | 1995 - 2016 |
| Brockhampton Estate (NT), Herefordshire | England: Mid | 62 | 496.8 | 29 | 1984 - 2016 |
| Thorneythwaite, Cumberland | England: North | 50 | 358.0 | 6 | 2017 |
| Ashridge Estate (NT), Hertfordshire | England: South | 234 | 543.6 | 110 | 1986 - 2020 |
| Millichope Park, Shropshire | England: Mid | 103 | 394.2 | 52 | 2020 - 2021 |
| Chirk Castle Park (NT), Denbighshire | Wales | 194 | 396.4 | 79 | 1993 - 2018 |
| Little Doward Wood, West Gloucestershire | England: Mid | 80 | 408.8 | 36 | 2004 - 2021 |
| Panshanger Park (1990-2022), Hertfordshire | England: South | 156 | 551.3 | 92 | 1990 - 2022 |
| Ham Lands, Surrey | England: South | 67 | 409.0 | 16 | 2010 - 2023 |
| Clumber Park (NT), Nottinghamshire | England: Mid | 177 | 422.0 | 75 | 1990 - 2023 |
| High Park, Blenheim Palace, Oxfordshire | England: South | 261 | 620.3 | 158 | 1950 - 2021 |
| Thorndon Park SSSI, South Essex | England: South | 66 | 580.3 | 47 | 2023 |
| Ashtead Common NNR, Surrey | England: South | 282 | 635.1 | 161 | < 2023 |
| Burnham Beeches, Buckinghamshire | England: South | 263 | 599.6 | 154 | < 2022 |
| Burnham Beeches (inc. Dorneywood NT and Huntswood Farm), Buckinghamshire | England: South | 284 | 640.1 | 175 | < 2022 |
| Bredon Hill, Worcestershire | England: Mid | 218 | 633.9 | 140 | 1970 - 2021 |
Saproxylic Quality Index