This file is a lookup between electoral wards/divisions, Westminster parliamentary constituencies, local authority districts and upper tier local authorities in the United Kingdom as at 31 December 2017. (File Size - 3 MB) Field Names - WD17CD, WD17NM, PCON17CD, PCON17NM, LAD17CD, LAD17NM, UTLA17CD, UTLA17NMField Types - Text, Text, Text, Text, Text, Text, Text, Text,Field Lengths - 9, 56, 9, 41, 9, 36, 9, 28REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/WD17_PCON17_LAD17_UTLA17_UK_LU_7d674672d1be40fdb94f4f26527a937a/FeatureServer