A best fit lookup between the 2011 Lower Layer Super Output Areas (LSOAs) and 2020 County and Unitary Authorities (CTYUA) in England and Wales as at 31 December 2020 (File Size 5MB).Field Names – LSOA11CD, LSOA11NM, CTYUA20CD, CTYUA20NM, FIDField Types – Text, Text, Text, Text, Field Lengths – 9, 33, 9, 36FID = 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/LSOA11_UTLA20_EW_LU_e1a63696ddc341638259c7378cd2ab23/FeatureServer