This file contains the digital vector boundaries for Counties and Unitary Authorities in the United Kingdom, as at December 2018. The boundaries available are: (BUC) Ultra Generalised (500m) - clipped to the coastline (Mean High Water mark). Contains both Ordnance Survey and ONS Intellectual Property Rights. Download File SizesUltra Generalised (500m) - clipped to the coastline (198 KB)REST URL of ArcGIS for INSPIRE View Service - https://ons-inspire.esriuk.com/arcgis/rest/services/Administrative_Boundaries/Counties_and_Unitary_Authorities_December_2018_Boundaries_UK_BUC/MapServer/exts/InspireView REST URL of ArcGIS for INSPIRE Feature Download Service - https://ons-inspire.esriuk.com/arcgis/rest/services/Administrative_Boundaries/Counties_and_Unitary_Authorities_December_2018_Boundaries_UK_BUC/MapServer/exts/InspireFeatureDownload REST URL of Feature Access Service - https://ons-inspire.esriuk.com/arcgis/rest/services/Administrative_Boundaries/Counties_and_Unitary_Authorities_December_2018_Boundaries_UK_BUC/FeatureServer