This file contains the digital vector boundaries for Middle layer Super Output Areas in England and Wales, as at 31 December 2001. The boundaries available are: Generalised (20m) - clipped to the coastline (Mean High Water mark). Contains both Ordnance Survey and ONS Intellectual Property Rights. Download File SizesGeneralised (20m) - clipped to the coastline (49 MB).REST URL of ArcGIS for INSPIRE View Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Middle_Layer_Super_Output_Areas_(Dec_2001)_Boundaries_EW_BGC/MapServerREST URL of ArcGIS for INSPIRE Feature DownloadService – https://dservices1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/services/Middle_Layer_Super_Output_Areas_Dec_2001_Boundaries_EW_BGC/WFSServer?service=wfs&request=getcapabilitiesREST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Middle_Layer_Super_Output_Areas_Dec_2001_Boundaries_EW_BGC_2022/FeatureServer