Please Note: This file updated on 26th August 2025 to correct ward/local authority district allocation for E01027305 - West Northamptonshire 048E which was incorrect. See further details on our dedicated notice page. If you have downloaded this product before this date, please check your version and download the updated product. Apologies for any inconvenience caused. For further assistance, please don’t hesitate to contact ONS.Geography@ons.gov.uk. This file is a best fit lookup between 2021 lower layer super output areas, electoral wards/divisions and local authority districts in England and Wales as at 2nd May 2024 (File Size - 2.7 MB) Field Names - LSOA21CD, LSOA21NM, LSOA21NMW, WD24CD, WD24NM, WD24NMW, LAD24CD, LAD24NM, LAD24NMWField Types - Text, Text, Text, Text, Text, Text, Text, Text, TextField Lengths - 9, 40, 29, 9, 53, 45, 9, 35, 24File updated to correct ward/local authority district allocation for E01027305 - West Northamptonshire 048EFor more information and an overview of best-fitting follow this link - https://geoportal.statistics.gov.uk/datasets/f0aac7ccbfd04cda9eb03e353c613faa/about