This file is a lookup between 1981 wards and 1991 wards in England and Wales as at 1st April 1991. (File size: 3MB).Field Names - WD81CD, WD81NM, LAD81CD, LAD81NM, WD91CD, WD91NM, LAD91CD, WD91NMField Types - Text, Text, Text, Text, Text, Text, Text, Text, FIDField Lengths - 6, 48, 4, 25, 6, 53, 4, 35FID = The FID, or Feature ID is created by
the publication process when the names and codes / lookup products are
published to the Open Geography portal. REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/WD81_WD91_EW_LU_644a3989bd4042119678945ca1f2f2ec/FeatureServer