This file is a lookup between electoral ward/divisions, registration districts and local authority districts in England and Wales as at 31 December 2018. (File Size - 2MB) Field Names - WD18CD, WD18NM, REGD18CD, REGD18NM, LAD18CD, LAD18NMField Types - Text, Text, Text, Text, Text, Text, Text, TextField Lengths - 9, 56, 9, 31, 9, 28 W20000002 - Denbigh South registration district and W20000003 - Denbigh North registration district merged to form W20000041 - Denbighshire registration district on 13th June 2018.REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/WD18_REGD18_LAD18_EW_LU_021a53c4f014409293e72c906008965a/FeatureServer