A lookup file of the local authority districts (local authority districts, unitary authorities, metropolitan districts, London boroughs) to the county and unitary authorities (counties, metropolitan counties, inner and outer London, unitary authorities) in England and Wales as at 31 December 2017. (File Size = 64KB)Field Names - LAD17CD, LAD17NM, CTYUA17CD, CTYUA17NMField Types - Text, Text, Text, TextField Lengths - 9, 28, 9, 28REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/LTLA17_UTLA17_EW_LU_45a46a5b8c3c47a6b84418d88aa1626c/FeatureServer