UK Local Authority District Boundaries: Ultra-Generalised Vector Data

Local Authority Districts (LADs) in the United Kingdom are represented by digital vector boundaries. The dataset provides ultra-generalised (500m) boundaries clipped to the coastline (Mean High Water mark) for multiple years, including 2021, 2022, 2023, and 2025. It contains intellectual property from both Ordnance Survey and the Office for National Statistics (ONS).

Use Cases

• Mapping electoral constituencies based on official Local Authority District boundaries.
• Aggregating socio-economic statistics to the LAD level for regional analysis.
• Creating background reference maps for UK-focused dashboards and reports using the ultra-generalised (500m) geometry.

Strengths

• Contains boundaries for multiple reference years (2021, 2022, 2023, 2025), supporting temporal analysis.
• Provides ultra-generalised (500m) geometries, which are optimized for small-scale mapping and visualization.
• Sourced from authoritative UK institutions (Ordnance Survey and ONS).

Limitations

• Key metadata such as row count, file size, and specific license terms are consistently missing across all platform entries.
• The dataset's availability and update dates conflict between platforms, with the same 2025 dataset showing a 'last updated' date of 2026-04-29 on some platforms.
• Column names and attribute schema are not described, limiting understanding of associated non-geometric data.

Provenance

Source

Ordnance Survey and Office for National Statistics (ONS).

Time Range

Boundaries are provided for specific snapshots in December of 2021, 2022, 2023, and 2025.

Freshness

The most recent dataset version references boundaries as of December 2025, with a metadata update recorded on 2026-04-29.

Geography

United Kingdom (clipped to coastline).