The Postcode Unit Area Feature Type is an area representation of the notional extents of areas containing addresses which share a common postcode unit. Notional extents are designed to enable users to display and analyse any data collected at the postcode unit level. These have been refined to avoid property extents and to follow the path of linear features such as roads, rivers and railways where possible. Polygons within this feature type are derived from georeferenced Royal Mail Postal Address File (PAF) delivery addresses. This feature type is for postcodes within Great Britain.
