This file is a best fit lookup between Output Areas and National Assembly for Wales constituencies (NAWC) and National Assembly for Wales electoral regions (NAWER) as at 31 December 2016 in Wales. (File Size - 2 MB)Column Descriptions: OA11CD | Text | 9NAWC16CD | Text | 9NAWC16NM | Text | 39NAWER16CD | Text | 9NAWER16NM | Text | 19FID | Number | 5REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/OA11_NAWC16_NAWER16_WA_LU_0f697b4b54174a558ec5d3fb54b7c902/FeatureServer
For more information and an overview of best-fitting follow this link - https://geoportal.statistics.gov.uk/datasets/f0aac7ccbfd04cda9eb03e353c613faa/about