This file is a lookup between electoral wards/divisions, Westminster parliamentary constituencies and local authority districts in the United Kingdom as at 31st December 2020. (File Size - 2 MB) Field Names - WD20CD, WD20NM, PCON20CD, PCON20NM, LAD20CD, LAD20NM, FIDField Types - Text, Text, Text, Text, Text, TextField Lengths - 9, 53, 9, 43, 9, 36NB: Electoral Change orders operative in May 2020 postponed until May 2021.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/WD20_PCON20_LAD20_UK_LU_9fce0f579a224876a26b07d99b064953/FeatureServer