OS Open Zoomstack

OS Open Zoomstack (Ordnance Survey). Access: download / vector tiles. Formats: GPKG, MBTiles. Resolution: multi-scale. Coverage: GB. Pricing/licence: free (OGL).

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What's in it

Data offered docs-verified: vector basemap · buildings · greenspaces · contours
Coverage docs-verified: Great Britain
Resolution docs-verified: National to street scale, 1:5,000,000 to 1:10,000
Update frequency docs-verified: Every six months
Formats docs-verified: GeoPackage · Vector Tiles
Access docs-verified: Free to use for everyone; download and API access; licence OGL (per catalogue entry)

Useful for

Use cases llm-inferred: Basemap for FRA and drainage report location figures, with site boundaries overlaid · GIS context layer for planning and environmental constraint maps · Offline or web basemap for field survey apps on site
Audience llm-inferred: GIS analysts · planners · drainage engineers · civils engineers · environmental consultants

Limitations

Constraints llm-inferred: Docs describe Great Britain coverage only; Northern Ireland is not mentioned, so check before UK-wide use. · Scale range ends at 1:10,000; docs point to OS VectorMap Local for highly detailed street-level mapping. · Updated every six months, so recent changes may not appear. · Basemap product; docs do not describe it as authoritative survey or engineering data. · Catalogue entry lists MBTiles, but docs mention only Vector Tiles; confirm the format before building a pipeline.

Licence: free (OGL)
Authentication: Unknown — review source docs
GitHub stars: Unknown
Last commit: Unknown
Last successful page check: 16/10/2026
Page health: page reachable
Package: Not recorded
Verification: Not independently verified

Provenance & evidence

Verified 2026-10-16 (curl HTTP 200).

Metadata observed 14/10/2026 · research sweep: sweep-2026-10-16 (named: UK)

https://www.ordnancesurvey.co.uk/products/os-open-zoomstack