ONS Open Geography Portal publishes 3,480 open datasets for United Kingdom. Browse them live in Vizzie and turn any one into a map or chart.
ONS Open Geography Portal is the open-data portal for United Kingdom. It runs on ArcGIS Hub, Esri's open-data platform for geographic data. You can browse it directly at geoportal.statistics.gov.uk. Reuse terms are set out in the portal's terms of service (OGL v3.0 for digital boundaries, reference maps and lookups. Two caveats carried from the licence page: OS-derived products require the 'Contains OS data © Crown copyright and database right [year]' statement alongside the ONS one, and Northern Ireland postcode data (BT postcodes, in the postcode products) needs a separate commercial licence direct from Land and Property Services.).
ONS Open Geography Portal publishes one licence across its whole catalogue, so 451 datasets here are covered by it even though they carry no licence of their own. That is a stronger position than an undeclared catalogue, where nothing grants permission at all — but the portal's terms are what govern, so read them before you rely on the data. Vizzie resolves each dataset to the same licence and writes the attribution line for you when you export or publish.
Added 15 Sep 2026. 3,478 datasets verified live. The UK join spine: GSS-coded boundaries and lookups matching the LSOA/LAD/CTYUA levels already seeded in reference_geographies.
No download, no GIS specialist. Opens in Vizzie.