Westminster Parliamentary Constituency Boundaries in Great Britain, December 2015

December 2015 digital vector boundaries for Westminster Parliamentary Constituencies in Great Britain. The dataset contains multiple boundary versions, including full-resolution extents and coastline-clipped generalisations at 20m, 200m, and 500m. It is provided by the Office for National Statistics and contains Ordnance Survey and ONS Intellectual Property Rights.

Use Cases

• Mapping electoral constituency extents based on the provided full-resolution boundaries.
• Performing spatial analysis of coastal constituencies using the coastline-clipped boundary versions.
• Creating simplified visualisations for web maps using the 20m, 200m, or 500m generalised boundaries.
• Integrating administrative boundaries for demographic or political research based on the 2015 constituency definitions.

Strengths

• Provides five distinct boundary versions, including full-resolution (52-56 MB) and generalised (488 KB - 7 MB) files.
• Contains boundaries as of a specific date: 31 December 2015.
• Includes both extent-of-the-realm and coastline-clipped variants for different analytical needs.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale statistical analysis.
• Last updated 2026-07-08 13:32:57.353786; freshness should be verified as the boundaries are from 2015.

Provenance

Source

Office for National Statistics (UK), likely incorporating Ordnance Survey data.

Collection Method

Official digital vector boundaries for administrative/electoral geography.

Time Range

As of 31 December 2015.

Freshness

The data snapshot is from 31 December 2015. The metadata record was last updated on 2026-07-08.

Geography

Great Britain (England, Scotland, Wales).