Geospatial data
Geographic & GIS data
Map the most important geodata sources in the UK, and get a practical framework for combining OS boundaries, UPRN-linked addresses, flood risk, environmental, and planning data in your projects.
Precise Location
Combine UPRN-linked boundaries and OS AddressBase data for authoritative property identification and boundary determination.
Climate & Flood Risk
Use Environment Agency flood maps and BGS ground stability data to assess flood risk, subsidence, and climate hazards.
Development Planning
Analyse planning constraints, local plan allocations, and green belt boundaries from Planning Data Gov UK and OS.
Strategy for working with UK geodata
A strong geodata strategy ensures that investments in data, licences, and expertise deliver value across property transactions, planning, and risk assessment.
Data Collection
Identify and retrieve relevant geodata from official UK sources like OS Data Hub, Environment Agency, and Planning Data Gov UK.
Harmonisation
Ensure all datasets use the same coordinate reference system (typically OSGB36 / BNG or WGS84) for accurate spatial overlay.
Analysis & Visualisation
Use GIS tools to create overview maps and extract insights through spatial analysis linked to UPRNs.
UK geodata catalogue
Boundaries & Addresses
OS AddressBase Premium
The authoritative UK address dataset linking every addressable location to a Unique Property Reference Number (UPRN). Covers 33 million addresses across Great Britain.
Licensed via OS Data Hub. Free tier available for developers.
OS MasterMap Topography Layer
The most detailed and accurate large-scale map of Great Britain. Contains over 500 million features including building outlines, land parcels, and topographic detail.
Licensed via OS Data Hub. Public Sector Geospatial Agreement (PSGA) for public bodies.
HM Land Registry INSPIRE Polygons
Free open dataset of registered freehold land and property boundaries in England and Wales, published under the INSPIRE directive. Updated monthly.
Free download from HMLR Use Land and Property Data service.
Flood & Environmental Risk
Environment Agency Flood Map for Planning
Official Environment Agency flood risk data for England, showing Flood Zones 1, 2, and 3 for rivers and the sea, plus surface water flood risk. Essential for planning applications.
Free access via EA Flood Map for Planning and open data downloads.
BGS GeoSure — Ground Stability
British Geological Survey ground stability datasets covering shrink-swell clay, landslide susceptibility, and dissolution risk across Great Britain. Critical for subsidence risk assessment.
Licensed data from BGS. Some datasets available via BGS GeoIndex.
Groundsure Environmental Reports
Commercial environmental risk reports combining BGS, EA, and historical mapping data into conveyancing-ready reports for residential and commercial property transactions.
Paid per report or via API for bulk access.
Elevation & Terrain
OS Terrain 50 & Terrain 5
Ordnance Survey digital terrain models covering Great Britain at 50m and 5m resolution. Used for flood modelling, solar analysis, and infrastructure planning.
OS Terrain 50 is free open data. OS Terrain 5 requires a licence.
Copernicus Land Monitoring
European satellite-based datasets providing land cover, urban atlas, and environmental indicator time series for the UK and Europe.
Free download and API access with global coverage.
Planning & Land Use
Planning Data Gov UK
DLUHC's open planning data platform providing standardised planning constraint and application data across England. Includes conservation areas, Article 4 directions, and development plan documents.
Free open data via API and bulk download.
OS Open Greenspace
Free OS dataset showing the location and extent of publicly accessible greenspace in Great Britain, including parks, playing fields, and allotments.
Free open data download from OS Data Hub.