Westminster Parliamentary Constituency Boundaries for Great Britain, December 2015

Five vector boundary resolutions for Westminster Parliamentary Constituencies in Great Britain as of 31 December 2015. The dataset includes full-resolution boundaries extending to the realm's extent and four coastline-clipped versions with varying levels of generalisation. It contains both Ordnance Survey and Office for National Statistics intellectual property rights.

Use Cases

• Mapping constituency boundaries based on the provided vector geometries.
• Analyzing coastal versus full-extent boundary definitions based on the Mean High Water and Mean Low Water marks.
• Creating simplified maps for visualization using the generalised (20m, 200m, 500m) boundary versions.
• Integrating electoral geography with other datasets using the 2015 constituency definitions.

Strengths

• Provides five specific boundary resolutions, including full (52-56 MB), generalised (20m, 7 MB), super generalised (200m, 1 MB), and ultra generalised (500m, 488 KB).
• Contains explicit intellectual property attribution to Ordnance Survey and the Office for National Statistics.
• Offers multiple access methods via listed ArcGIS REST service URLs for INSPIRE View, Feature Download, and a Feature Server.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Freshness should be verified; the dataset is a snapshot from December 2015, though metadata was last updated in 2026.

Provenance

Source

Office for National Statistics (UK), likely in collaboration with Ordnance Survey.

Collection Method

Digital vector boundaries created and maintained by the relevant UK national authorities.

Time Range

2015-12-31 (snapshot date)

Freshness

Data snapshot is from 2015-12-31; metadata record was last updated 2026-07-08.

Geography

Great Britain (England, Scotland, Wales)