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Local Planning Authority to Local Authority District (April 2025) Lookup in the UK
This is a lookup file between local planning authorities and local authority districts in the United Kingdom as at 1st April 2025. (File size - 88 KB). Field Names -... -
Ward to Unitary Authority to Senedd Cymru Electoral Region (December 2025)...
A lookup file of wards to unitary authorities to Senedd Cymru electoral regions in Wales as at 31st December 2025. (File size - 168KB) Field Names - WD25CD, WD25NM,... -
Ward to Unitary Authority to Senedd Cymru Constituency (December 2025) Lookup in WA
This is a lookup file between wards and Senedd Cymru constituencies in Wales as at 31st December 2025. (File size - 184KB) Field Names - WD25CD, WD25NM, WD25NMW, UA25CD,... -
Unitary Authority to Local Health Board (December 2025) Lookup in WA
A lookup file between unitary authorities and local health boards in Wales as at 31st December 2025. (File Size - 16 KB) Field Names - UA25CD, UA25NM, LHB25CD,... -
Postcode to OA (2021) to LSOA to MSOA to LAD (November 2025) Best Fit Lookup...
A best-fit lookup between postcodes, 2021 Census Output Areas (OA), Lower Layer Super Output Areas (LSOA), Middle Layer Super Output Areas (MSOA) and local authority districts... -
Postcode to OA (2021) to LSOA to MSOA to LAD (August 2025) Best Fit Lookup in the UK
A best-fit lookup between postcodes, 2021 Census Output Areas (OA), Lower Layer Super Output Areas (LSOA), Middle Layer Super Output Areas (MSOA) and local authority districts... -
Local Authority District to County and Unitary Authority (April 2025) Lookup...
A lookup file of local authority districts (local authority districts, unitary authorities, metropolitan districts, London boroughs) to the counties and unitary authorities in... -
Local Authority District (December 2024) to LAU1 to ITL3 to ITL2 to ITL1...
A lookup between local authority districts (LAD) as at 31st December 2024, LAU1 and International Territorial Levels (ITL level 3, ITL level 2 and ITL level 1 areas as at 1st... -
Ward to Westminster Parliamentary Constituency to LAD to CTYUA (May 2025)...
This file is a lookup between electoral wards/divisions, Westminster parliamentary constituencies, local authority districts and county/unitary authorities in the United Kingdom... -
Local Authority District (2024) to Local Authority District (2025) Lookup in...
A lookup file of the local authority districts as at December 2024 to the local authority districts as at 1st April 2025 in the United Kingdom (File Size = 64KB) Field Names -... -
Postcode to OA (2021) to LSOA to MSOA to LAD (May 2025) Best Fit Lookup in the UK
A best-fit lookup between postcodes, 2021 Census Output Areas (OA), Lower Layer Super Output Areas (LSOA), Middle Layer Super Output Areas (MSOA) and local authority districts... -
Postcode to OA (2021) to LSOA to MSOA to LAD (February 2025) Best Fit Lookup...
A best-fit lookup between postcodes, 2021 Census Output Areas (OA), Lower Layer Super Output Areas (LSOA), Middle Layer Super Output Areas (MSOA) and local authority districts... -
Local Authority District to County and Unitary Authority (April 2025) Lookup...
A lookup file of local authority districts (local authority districts, unitary authorities, metropolitan districts, London boroughs) to the counties and unitary authorities in... -
Local Authority District to Region (April 2025) Lookup in EN (V2)
This is a lookup file between local authority districts and regions in England as at 1st April 2025. (File Size - 56 KB) Field Names - LAD25CD, LAD25NM, RGN25CD, RGN25NMField... -
ITL Level 3 (2021) to ITL Level 3 (2025) Lookup in the UK
A lookup file between the International Territorial Levels (ITL level 3) areas in the United Kingdom that were operative in January 2021 and January 2025. (File Size - 48... -
ITL Level 2 (2021) to ITL Level 2 (2025) Lookup in the UK
A lookup file between the International Territorial Levels (ITL level 2) areas in the United Kingdom that were operative in January 2021 and January 2025. (File Size - 16...