This file is a best fit lookup between 2011 lower layer super output areas and county and unitary authorities in England and Wales as at 31 December 2018. (File size - 4MB)Field Names - LSOA11CD, LSOA11NM, CTYUA18CD, CTYUA18NMField Types - Text, Text, Text, TextField Lengths - 9, 33, 9, 28NB: File amended to include correct CTYUA for London Boroughs and Metropolitan districtsW01000060 - Gwynedd 15B - now correctly allocated to W06000002 - Gwynedd
For more information and an overview of best-fitting follow this link - https://geoportal.statistics.gov.uk/datasets/f0aac7ccbfd04cda9eb03e353c613faa/about
REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/LSOA11_UTLA18_EW_LUv2_d53478191d0d4294927169ad9ac92e2b/FeatureServer