| Calke Abbey NT, Derbyshire | England: Mid | 165 | 417.6 | 74 | 1998 - 2004 |
| Bushy Park & Home Park, Middlesex | England: South | 255 | 629.0 | 141 | 1996 - 2013 |
| Lullingstone Park, West Kent | England: South | 105 | 464.8 | 42 | < 1977 |
| Monks Wood NNR, Huntingdonshire | England: Mid | 157 | 414.0 | 48 | < 1973 |
| New Forest, South Hampshire | England: South | 324 | 782.7 | 200 | < 2000 |
| The Oaks, Kingston Lacy, Dorset | England: South-West | 72 | 262.5 | 12 | 2000 - 2001 |
| Short Wood, Northamptonshire | England: Mid | 93 | 305.4 | 14 | < 1999 |
| Silwood Park, Berkshire | England: South | 159 | 605.0 | 86 | 1998 - 1999 |
| Dunham Massey Park (Greater), Cheshire | England: Mid | 84 | 291.7 | 27 | < 1992 |
| Rug, Merionethshire | Wales | 47 | 240.4 | 8 | < 1994 |
| Richmond Park (total), Surrey | England: South | 253 | 644.3 | 157 | 1950 - 2006 |
| Moccas Park, Herefordshire | England: Mid | 239 | 576.6 | 138 | < 1998 |
| Arundel Park, West Sussex | England: South | 130 | 475.4 | 53 | < 1999 |
| Box Hill, Surrey | England: South | 225 | 550.7 | 67 | < 1997 |
| Kedleston Park NT, Derbyshire | England: Mid | 143 | 372.7 | 58 | < 2014 |
| Dinefwr Deer Park, Carmarthenshire | Wales | 156 | 362.8 | 57 | < 1999 |
| Hardwick Park (NT), Derbyshire | England: Mid | 115 | 336.5 | 37 | 1984 - 2004 |
| Kennet Floodplain, Berkshire | England: South | 124 | 353.2 | 20 | 2003 |
| Eridge Park, East Sussex | England: South | 80 | 308.8 | 17 | < 1999 |
| Parc Pont-faen, Cardiganshire | Wales | 45 | 253.3 | 10 | < 2002 |
| Plas Newydd, Anglesey | Wales | 19 | 242.1 | 1 | < 1994 |
| Gwysaney, Flintshire | Wales | 24 | 216.7 | 0 | 1994 |
| Coedydd Maentwrog, Merionethshire | Wales | 24 | 295.8 | 6 | < 1969 |
| Eastnor Park, Herefordshire | England: Mid | 93 | 412.9 | 46 | < 2010 |
| Donington Park (total), Leicestershire (with Rutland) | England: Mid | 122 | 438.5 | 53 | 1971 - 2014 |
| Richmond Park (1980-2006), Surrey | England: South | 205 | 539.0 | 110 | 1980 - 2006 |
| Studley Royal, Mid-west Yorkshire | England: North | 100 | 328.0 | 33 | 1901 - 2016 |
| Croft Castle, Herefordshire | England: Mid | 121 | 399.2 | 52 | < 2012 |
| Petworth Deer Park (NT), West Sussex | England: South | 195 | 515.9 | 85 | 1988 - 2020 |
| 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 |
| Clumber Park 2023, Nottinghamshire | England: Mid | 124 | 462.1 | 66 | 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 |
| Wicken Fen (NT), Cambridgeshire | England: South | 152 | 451.3 | 59 | 1980 - 2023 |
| Danbury Common (NT) & Danbury Park, South Essex | England: South | 120 | 431.7 | 40 | 1976 - 2019 |
Saproxylic Quality Index