| Glen Affric, East Inverness-shire | Scotland | 66 | 450.0 | 11 | < 2014 |
| Forest of Dean, West Gloucestershire | England: Mid | 89 | 428.1 | 30 | 1965 - 1998 |
| Longleat, South Wiltshire | England: South-West | 46 | 280.4 | 11 | 1994 - 2004 |
| Lullingstone Park, West Kent | England: South | 105 | 464.8 | 42 | < 1977 |
| Monks Wood NNR, Huntingdonshire | England: Mid | 157 | 414.0 | 48 | < 1973 |
| Sidmouth Wood (Richmond Park), Surrey | England: South | 56 | 328.6 | 17 | < 2006 |
| Richmond Park (total), Surrey | England: South | 253 | 644.3 | 157 | 1950 - 2006 |
| Moccas Park, Herefordshire | England: Mid | 239 | 576.6 | 138 | < 1998 |
| Abernethy Estate, East Inverness-shire | Scotland | 142 | 663.4 | 18 | < 1994 |
| Esher Commons (total), Surrey | England: South | 234 | 498.3 | 84 | < 2002 |
| Penallt Woods, Monmouthshire | Wales | 57 | 291.2 | 11 | 2007 - 2013 |
| Clay Vallet Wood, Herefordshire | England: Mid | 58 | 286.2 | 11 | 2002 - 2003 |
| Parc Nanteos, Cardiganshire | Wales | 45 | 233.3 | 7 | < 1999 |
| Breda Hill, South Aberdeenshire | Scotland | 12 | 383.3 | 1 | < 1995 |
| Pwl-Mawr, Penallt, Monmouthshire | Wales | 16 | 243.8 | 1 | 2013 |
| Plyde Loch, Ayrshire | Scotland | 17 | 247.1 | 4 | 2012 - 2014 |
| Windsor Forest, Berkshire | England: South | 363 | 801.7 | 254 | < 1998 |
| Richmond Park (1980-2006), Surrey | England: South | 205 | 539.0 | 110 | 1980 - 2006 |
| Auchinleck Estate, Ayrshire | Scotland | 39 | 279.5 | 9 | 2013 - 2016 |
| Plyde Loch (revised), Ayrshire | Scotland | 25 | 240.0 | 4 | 2012 - 2016 |
| Lanhydrock Estate (NT), East Cornwall | England: South-West | 65 | 315.4 | 23 | < 2008 |
| Castle Drogo (NT), South Devon | England: South-West | 79 | 392.4 | 35 | 1996 - 2016 |
| Thorneythwaite, Cumberland | England: North | 50 | 358.0 | 6 | 2017 |
| Auchinleck Estate, Ayrshire | Scotland | 41 | 278.0 | 9 | 2000 - 2021 |
| Wye Valley Woods SAC, Monmouthshire | Wales | 132 | 456.1 | 49 | 1994 - 2018 |
| 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 |
| Horner Woods NNR, South Somerset | England: South-West | 88 | 298.9 | 27 | 1998 - 2015 |
| Ayr Gorge, Ayrshire | Scotland | 57 | 324.6 | 12 | 1960 - 2020 |
Saproxylic Quality Index