This file contains the digital vector boundaries for built-up areas in England and Wales as at 27 March 2011 (Census day). The built-up area boundaries are generalised and created using an automated approach based on a 50m grid squares. UPDATE - 22/06/2017 - This boundary set has been updated with a new field (URBAN_BUA) describing whether the BUA has a population of 10000 or more (2011 Census) usual residents. No boundaries have been altered. For more information about the urban classification please refer to the Rural Urban Classification user guides - Click Here Please note that this product contains both Ordnance Survey and ONS Intellectual Property Rights. REST URL of ArcGIS for INSPIRE View Service – https://ons-inspire.esriuk.com/arcgis/rest/services/Census_Boundaries/Built_Up_Areas_December_2011_Boundaries_V2/MapServer/exts/InspireView REST URL of ArcGIS for INSPIRE Feature Download Service – https://ons-inspire.esriuk.com/arcgis/rest/services/Census_Boundaries/Built_Up_Areas_December_2011_Boundaries_V2/MapServer/exts/InspireFeatureDownloadREST URL of ArcGIS Feature Service – https://ons-inspire.esriuk.com/arcgis/rest/services/Census_Boundaries/Built_Up_Areas_December_2011_Boundaries_V2/FeatureServer