A best-fit lookup between 2011 Output Areas (OA) and built-up area sub-divisions (BUASD) and built-up areas (BUA), local authority districts (LAD) and regions (RGN) as at 31 December 2011 in England and Wales. (File Size 21.3MB).Field Names – OA11CD, BUASD11CD, BUASD11NM, BUA11CD, BUA11NM, LAD11CD, LAD11NM, LAD11NMW, RGN11CD, RGN11NM, RGN11NMW
Field Types – Text, Text, Text,
Text, Text, Text, Text, Text, Text, Text, Text
Field Lengths – 9, 9, 47, 9, 58, 9, 36, 36, 9, 24, 24REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/OA11_BUASD11_BUA11_LAD11_RGN11_EW_LU_a1f3009e9a844e67ae1698f358481d3d/FeatureServer
For more information and an overview of best-fitting follow this link - https://geoportal.statistics.gov.uk/datasets/f0aac7ccbfd04cda9eb03e353c613faa/about