Westminster Parliamentary Constituency Boundaries in Great Britain, December 2016

Office for National Statistics provides digital vector boundaries for Westminster Parliamentary Constituencies in Great Britain as at December 2016. The dataset contains five boundary versions at different resolutions, from full extent to ultra generalised, with file sizes ranging from 500 KB to 55 MB. It contains both Ordnance Survey and ONS Intellectual Property Rights.

Use Cases

• Visualize electoral district geography based on the provided vector boundaries.
• Perform spatial analysis of constituency areas based on the coastline-clipped versions.
• Create simplified maps for web applications based on the super generalised (200m) or ultra generalised (500m) boundaries.
• Integrate political boundaries into a Geographic Information System (GIS) based on the available GeoJSON, KML, and ArcGIS service formats.

Strengths

• Offers five distinct boundary resolutions, from full extent (52 MB) to ultra generalised (500 KB), catering to different use cases.
• Provides direct access via multiple formats (GeoJSON, CSV, KML, ZIP) and ArcGIS REST services for flexible integration.
• Contains intellectual property from two authoritative UK sources: Ordnance Survey and the Office for National Statistics.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is a snapshot from December 2016; constituency boundaries may have changed since then.
• Row count is unknown, which may limit suitability assessment for large-scale analysis.

Provenance

Source

Office for National Statistics

Time Range

December 2016

Freshness

Last updated 2026-07-08 13:33:29.207252; freshness should be verified.

Geography

Great Britain