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 31 December 2017. (File Size = 64KB)Field Names - LTLA17CD, LTLA17NM, UTLA17CD, UTLA17NMField 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