Index Polygons Spatial data (INSPIRE) service
INSPIRE Index Polygons is an open source dataset, developed to comply with theĀ 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
HM Land Registry registers the ownership of land and property in England and Wales.
https://www.gov.uk/government/organisations/land-registry