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AddressBase support

Ordnance Survey's addressing product, AddressBase® matches 29 million Royal Mail postal address to unique property reference numbers (UPRN), bringing a geographical dimension to the matched records.

Getting started

The AddressBase product family is made up of the following products:

  • AddressBase
  • AddressBase Core
  • AddressBase Plus
  • AddressBase Premium
  • AddressBase Plus - Islands
  • AddressBase Premium – Islands

Getting Started Guide (PDF)

Use our Getting Started Guide and Product Guide to understand the full capabilities of our AddressBase product.

Product Guide (PDF)

This Product Guide is an introduction to the AddressBase suite of products and provides information on all three products, their main features and creation process.

AddressBase release notes

Download the release notes for our AddressBase and OS Open UPRN products.

Technical information

AddressBase data is an addressing gazetteer that can be used within geographical information systems (GIS) and database systems.

AddressBase technical specification (PDF)

Use this technical specification document to understand the technical aspects of AddressBase.

Unique Property Reference Number (UPRN)

We encourage the widest possible use and sharing of UPRNs, through our Open Identifiers policy.