This file is a best fit lookup between 2021 lower layer super output areas and county and unitary authorities in England and Wales as at 1st April 2023. (File size - 5.8 MB)Field Names - LSOA21CD, LSOA21NM, LSOA21NMW, CTYUA23CD, CTYUA23NM, CTYUA23NMWField Types - Text, Text, Text, Text, Text, TextField Lengths - 9, 40, 29, 9, 35, 24
For more information and an overview of best-fitting follow this link - https://geoportal.statistics.gov.uk/datasets/f0aac7ccbfd04cda9eb03e353c613faa/about