Heritage at Risk on Crown, National Trust, Forestry England and NNR land

Historic England Heritage at Risk Register, .

2026 register: This map now includes the 2026 Heritage at Risk spreadsheet and GIS layer (year slider 2013–2026), with Crown owner-type and National Trust land tags.

Move the slider to see which entries were on the register each year. Hollow rings show entries that are no longer on the register.

HE’s “Published Owner Type”. There is no separate category for the MoD, the Church of England, water companies, Network Rail or the Duchies: they fall under Government or agency, Religious organisation, Utility and Crown.

Fill colour = condition: very bad / extensive problems poor / major problems significant local problems fair / minor unknown.
Outline = trend: black declining, green improving, blue stable, grey unknown.
Land: National Trust (2017 open data) Forestry England (ownership 2026) National Nature Reserves Crown Estate coastal title (live).

Heritage at Risk Register data © Historic England, Open Government Licence v3: annual spreadsheets 2013–2026 and the HAR 2021–2026 GIS layers. National Trust Open Data Land 2017 (Always Open and Limited Access) © National Trust, CC BY 4.0. Forestry England Ownership: contains, or is based on, information supplied by the Forestry Commission. © Crown copyright and database right 2026 Ordnance Survey AC0000814847. Open Government Licence v3. National Nature Reserves (England) © Natural England, Open Government Licence v3. Registered Coastal Title © The Crown Estate. Its Public Data Licence (GIS) v1.1 allows viewing only, so the layer is shown live from The Crown Estate's server and is not copied or analysed.

“Crown” uses Historic England's own published owner type. That includes the Duchy of Cornwall (Dartmoor and the Isles of Scilly) and other Crown bodies, not only the Crown Estate. The Crown Estate publishes no open boundaries for its rural farms (for example on the Marlborough Downs). Its coastal title may only be viewed, not combined with other data. National Trust land is the Trust's 2017 open data and is not Crown land. An entry counts as on NT land when at least 10% of its HAR area lies on that land. Entries that left the register before 2021 have no published boundary, so the NT series undercounts before 2021. Forestry England and NNR tags use the same 10% test. Forestry England land is the current estate (freehold and leasehold), so earlier years are compared with today’s holdings. An NNR is a designation, not ownership: many are run by Natural England but others by trusts, councils or private owners. No open boundary data exists for MoD, Church Commissioners, county farms, water companies, Network Rail, National Highways, Canal & River Trust land, the Duchies or English Heritage guardianship sites, so those appear only through HE’s owner types. In 2025 HE changed how trend is recorded, so the jump in “declining” in 2025 is partly a change of method. The 2025 spreadsheet no longer gives the principal vulnerability.