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AddressBase™ Islands is an add-on for AddressBase™ Plus and AddressBase™ Premium. It is available as a complete dataset, providing addressing data for Northern Ireland, Isle of Man and Channel Islands and applying the AddressBase™ product schema to the data, allowing the use of the Unique Property Reference Number (UPRN) and similar classifications across the whole geographic area.

The AddressBase™ product range includes the best parts of local government’s National Land and Property Gazetteer (NLPG) and the Royal Mail Postcode Address File (PAF), plus extra features for address classification. Attributes include the Unique Property Reference Number (UPRN), four levels of classification for the type of address, as well as all standard address details with x,y coordinates. Additional language options for addresses are also provided, along with the local authority and parish code, VOA codes and multiple occupancy information.