Statistical GIS Boundary Files for London: Output Areas and Wards

Greater London boundary files from the Greater London Authority include Output Areas (OA), Lower/Middle Super Output Areas (LSOA/MSOA), Wards, and Boroughs for 2004, 2011, 2014, and 2018. The data is provided in ESRI and MapInfo formats, with OA to MSOA boundaries generalized to reduce file size. Copyright statements for National Statistics and Ordnance Survey data are required for maps created using these boundaries.

Use Cases

• Create demographic maps based on Output Area (OA) and Super Output Area (SOA) boundaries mentioned in the description.
• Analyze changes in administrative boundaries over time using the 2004, 2011, 2014, and 2018 London Ward files.
• Perform spatial joins for socio-economic data using the hierarchical census geography (OA, LSOA, MSOA).
• Visualize the Greater London Authority area using the provided London Borough and Greater London boundary files.

Strengths

• Includes multiple hierarchical census geographies: OA, LSOA, and MSOA.
• Provides temporal coverage with boundaries for 2004, 2011, 2014, and 2018.
• Boundaries are generalized to reduce file size and improve loading time, as noted.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file sizes are unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Greater London Authority

Time Range

Covers boundaries from 2004, 2011, 2014, and 2018.

Freshness

Last updated 2026-03-25 12:00:42.620114; freshness should be verified.

Geography

Greater London, United Kingdom