This file is a best fit lookup between output areas (December 2011), electoral wards/divisions and local authority districts in England and Wales as at 31st December 2020.  (File Size - 10 MB)Field Names - OA11CD, WD20CD, WD20NM, LAD20CD, LAD20NM, FIDField Types - Text, Text, Text, Text, TextField Lengths - 9, 9, 53, 9, 35NB: Electoral Change orders operative in May 2020 postponed until May 2021File updated following receipt of The Leeds (Reorganisation of Community Governance) Amendment Order 2018.  Boundary and code change for Garforth & Swillington, and Temple Newsam wards)FID = The FID, or Feature ID is created by the publication process when the names and codes / lookup products are published to the Open Geography portal.REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/OA11_WD20_LAD20_EW_LU_v2_004d7ac1f5b24dadabe5a24e93ec5a3e/FeatureServer

For more information and an overview of best-fitting follow this link - https://geoportal.statistics.gov.uk/datasets/f0aac7ccbfd04cda9eb03e353c613faa/about