HM Land Registry’s National Polygon dataset is a subset of HM Land Registry's Index Map containing the freehold and leasehold registration indexing for England and Wales. Every title, whether freehold or leasehold, contains at least one index polygon. The data includes metadata about the polygon and the record status (indicates additions, changes and deletions). The National Polygon dataset along with the Title Descriptor dataset, and the Title Number and UPRN Look Up dataset, comprise the complete National Polygon Service. Index polygon extents are indicative of the title registration, the Title Plan and Title Register should be consulted for full details
