Index Polygons Spatial data (INSPIRE) service
INSPIRE Index Polygons is an open source dataset, developed to comply with the INSPIRE Directive. It contains the locations of freehold registered property in England and Wales. It is a sub-set of our Index Polygons database for all freehold land and property.
HM Land Registry
Mae HM Land Registry yn cofrestru perchnogaeth tir a phropierty yng Nghymru a Lloegr.
https://www.gov.uk/government/organisations/land-registry