| Glen Affric, East Inverness-shire | Scotland | 66 | 450.0 | 11 | < 2014 |
| Powis Castle Park (total), Montgomeryshire | Wales | 170 | 372.9 | 70 | 1994 - 2003 |
| Longleat, South Wiltshire | England: South-West | 46 | 280.4 | 11 | 1994 - 2004 |
| New Forest, South Hampshire | England: South | 324 | 782.7 | 200 | < 2000 |
| Ulverscroft, Leicestershire (with Rutland) | England: Mid | 47 | 197.9 | 10 | < 1998 |
| Cirencester Park, East Gloucestershire | England: Mid | 76 | 314.5 | 24 | < 1999 |
| Abernethy Estate, East Inverness-shire | Scotland | 142 | 663.4 | 18 | < 1994 |
| Shrubland Estate, East Suffolk | England: South | 91 | 512.1 | 38 | 1975 - 2005 |
| The Mens, West Sussex | England: South | 139 | 441.0 | 56 | < 2010 |
| Dinefwr Deer Park, Carmarthenshire | Wales | 156 | 362.8 | 57 | < 1999 |
| Llanover Park, Monmouthshire | Wales | 118 | 330.5 | 37 | < 1996 |
| Bentley Park Wood, Warwickshire | England: Mid | 62 | 264.5 | 12 | < 2000 |
| Clay Vallet Wood, Herefordshire | England: Mid | 58 | 286.2 | 11 | 2002 - 2003 |
| Lockhaugh Bank Wood, South Northumberland | England: North | 46 | 243.5 | 7 | < 1993 |
| Gwydyr Forest, Caernarvonshire | Wales | 17 | 235.3 | 1 | < 1998 |
| Gibside, County Durham | England: North | 83 | 397.6 | 13 | < 1992 |
| Auchinleck Estate, Ayrshire | Scotland | 39 | 279.5 | 9 | 2013 - 2016 |
| Sherrardspark Wood SSSI, Hertfordshire | England: South | 89 | 368.5 | 36 | 2008 - 2020 |
| Auchinleck Estate, Ayrshire | Scotland | 41 | 278.0 | 9 | 2000 - 2021 |
| Sheringham Park (NT), East Norfolk | England: South | 88 | 309.1 | 25 | 1987 - 2022 |
| High Park, Blenheim Palace, Oxfordshire | England: South | 261 | 620.3 | 158 | 1950 - 2021 |
| Rutland Water Nature Reserve, Leicestershire (with Rutland) | England: Mid | 68 | 244.1 | 8 | 2021 - 2022 |
Saproxylic Quality Index