A lookup file of the lower tier local authorities (local authority districts, unitary authorities, metropolitan districts, London boroughs) to the upper tier local authorities (counties, metropolitan counties, inner and outer London, unitary authorities) in England and Wales as at 1st April 2021. (File Size = 56KB)Field Names - LTLA21CD, LTLA21NM, UTLA21CD, UTLA21NM, FIDField Types - Text, Text, Text, Text, NumericField Lengths - 9, 35, 9, 35FID = 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. File includes the following LAD changesE06000061 - North Northamptonshire, E06000062 - West Northamptonshire - new unitary authorities. (Northamptonshirecounty abolished)Corby, Daventry, East Northamptonshire, Kettering, Northampton, South Northamptonshire, and Wellingborough local authorities abolished)REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/LTLA21_UTLA21_EW_LU_9bbac05558b74a88bda913ad5bf66917/FeatureServer