This file contains the digital vector boundaries for Combined Authorities, in England, as at December 2025.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. REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Combined_Authorities_December_2025_Boundaries_EN_BUC/FeatureServer REST URL of WFS Server – https://dservices1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/services/Combined_Authorities_(December_2025)Boundaries_EN_BUC/WFSServer?request=getcapabilities&service=wfs REST URL of MapServer – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Combined_Authorities(December_2025)_Boundaries_EN_BUC/MapServer