OS AddressBase Core

The entry-level address database for Great Britain

OS AddressBase Core

The entry-level address database for Great Britain

As the entry-level addressing product from Ordnance Survey, AddressBase Core gives easy access to complete and accurate address data for 33 million properties in Great Britain, including unique property reference numbers (UPRN) and additional attributes. Use this easy-to-use product to identify a property and locate it on a map with precision. AddressBase Core is available to Public Sector Geospatial Agreement (PSGA) members and to business customers under commercial licensing.

OS AddressBase

OS AddressBase Core

OS AddressBase Core provides a current view of addresses matched between the LLPGs (England and Wales), CAGs (Scotland) and Royal Mail PAF® data. The product provides Royal Mail attribution as well as enhancing PAF with X & Y coordinates on the British National Grid and ETRS89 coordinate reference system, and also providing a primary level classification.

This product will provide you with a single view of an address and allow you to carry out primary analysis. You could also locate this address on a map to give you a geographic view. OS AddressBase Core is provided on a weekly update cycle.

Data enrichment with UPRN

OS AddressBase Core can be used in any application which requires the precise location of an address. It can also be used to enrich records in your data with Unique Property Reference Number (UPRN). UPRNs allows different databases to be connected based on a unique frame of reference – location.

Adding the UPRN to databases can help make deeper sense of data once it’s all linked together. Every property in Great Britain has a UPRN, and OS AddressBase Core adds a precise location. This accurate and consistent reference system links people across multiple services, enabling data analytics and unlocking predictive insights that can underpin policy making.

OS AddressBase Core - Classifications
OS AddressBase / AddressBase Plus / AddresBase Premium / AddressBase Islands - Benefits

Addressing key challenges

OS AddressBase Core offers a valuable range of benefits to your organisation:

  • Reduces the effort of maintaining address information across multiple departments
  • Facilitates data-sharing between multiple organisations and departmental systems
  • Connectivity – with the UPRN as the key identifier, property/address systems can share information without the need for multiple matching processes

In addition to supporting a variety of data formats, we can also deliver OS AddressBase Core as a high-performance, reliable and secure API:

Our added value

By licensing OS data products through Europa Technologies, you will automatically receive the following benefits, charged as optional extras by many of our competitors:

  • Free consultation – an opportunity to discuss your precise requirements and tailor a bespoke solution.
  • Free support – If you have any questions or issues with the product during the licence period, just ask! Our support team is ready to help you.
  • Broad range of formats – Ordnance Survey supply their products in limited formats but we can convert into all common GIS and CAD formats such as GeoPackage, MapInfo TAB, Esri Shapefile, Esri File GeoDatabase, Autodesk DWG and others. For many data formats, deliveries can also include our award-winning cartographic styling.
  • Expert advice – From an award-winning Ordnance Survey Strategic Partner and Ordnance Survey Accredited Consultant.

If you have a requirement for Ordnance Survey data, or are an existing licence holder and are considering a new supplier, please contact us.

Ordnance Survey Licensed Partner

Related products

OS AddressBase Plus

OS AddressBase Plus

Along with Royal Mail PAF data, AddressBase Plus gives you up-to-date local authority addresses, multi-occupancy addresses and OS MasterMap TOID references. Accuracy is guaranteed with address information sourced from 380 local authorities across Great Britain, Ordnance Survey large-scale mapping, Royal Mail and the Valuation Office Agency.

AddressHub photo logo


AddressHub is an address product for Great Britain built upon definitive Royal Mail Postcode Address File (PAF®) data, enhanced with UPRN (Unique Property Reference Number), coordinates and other valuable attributes. Designed to deliver a cost-effective addressing capability to organisations of any size, AddressHub opens the door to connect databases from multiple sources. Search, locate and identify addresses with ease and precision.

europaIQ photo logo


europaIQ offers valuable property intelligence data for Great Britain in a variety of pragmatic categories. Whether you are an owner, investor, developer or manager, europaIQ provides invaluable intelligence about properties and their surrounding area. For both commercial and residential properties, a wide variety of data is available which can meet challenges, improve decision-making and reduce risk.

OSNI Pointer logo

OSNI Pointer

Pointer is the address database for Northern Ireland and the standard address for every property. Land & Property Services (LPS) maintains the database with help from local councils and Royal Mail.

Documentation & Resources

As part of our support for OS AddressBase Core, we provide a full, up-to-date library of documentation and resources, including product guides and technical specifications.

Documentation & Resources

How can we help you?

Ask an expert…

Do get in touch if you would like more details about OS AddressBase Core (technical, licensing, pricing, etc.) or would like to arrange a personalised demo. Our product specialists will be happy to provide you with a free consultation.