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: Full resolution - extent of the realm (usually this is the Mean Low Water mark but in some cases boundaries extend beyond this to include off shore islands)Contains both Ordnance Survey and ONS Intellectual Property Rights. Download File SizesFull resolution - extent of the realm (154 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_BFE/MapServerREST URL of ArcGIS for INSPIRE Feature DownloadService – https://dservices1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/services/Middle_Layer_Super_Output_Areas_Dec_2001_Boundaries_EW_BFE/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_BFE_2022/FeatureServer