AddressBase matches 29 million Royal Mail postal address to unique property reference numbers (UPRN), bringing a new dimension to the matched records.

  • Addressing and location
  • Download
  • Public Sector Plan
  • Premium Plan
  • Energy & Infrastructure Plan

This product is updated every six weeks

Representation of data provided
Representation of data provided
© Crown copyright and database rights. Ordnance Survey 2024

What AddressBase provides you with

Precision identification

Identify a property and locate it on a map with precision – using the X and Y coordinates we’ve assigned to the Royal Mail Postcode Address File (PAF)® data.

Understand the nation with PAF

Every address geo data record provides Royal Mail address information from PAF, the Unique Delivery Point Reference Number (UDPRN) and X and Y coordinates.

Track customer data

Using the basic classifications in AddressBase you can quickly filter between residential and commercial addresses, which is ideal for marketing purposes.

Try this product with free sample data

Give it a try

Download a small area of AddressBase.

Or try out the real thing by applying for a Data Exploration Licence

Need more technical information?

Read product guides, technical specification and further documents and support.


Technical information

© Crown copyright and database rights. Ordnance Survey 2024


Use cases

Reduce marketing costs

Our basic classifications – residential or commercial – will reduce the costs and increase the effectiveness of your direct marketing.

Confidence in data

In customer services, the need for accuracy is paramount. Have confidence in your front-line staff’s ability to look up addresses on a database of millions, quickly and efficiently

  • Download
Data theme
  • Address
Data structure
Vector - Points
Great Britain
1:1250 to 1:10,000
  • CSV
  • GML 3.2.1
Ordering area
  • All of Great Britain or customisable area (5km2 tiles or user defined polygon)
OS Data Hub plan
  • Public Sector Plan
  • Premium Plan
  • Energy & Infrastructure Plan

Documents and Support

Getting started guides

Technical specification

  • AddressBase - Technical specification
    The technical specification provides detailed technical information about the product. It is targeted at technical users and software developers.
    743 kb
    March 22, 2021

Supporting documents

Release notes

Additional information

House to flat conversions

To find out detail such as houses that have been converted to flats, you'll need AddressBase Plus. it includes current properties and addresses sourced from local authorities, Ordnance Survey and Royal Mail. These are all matched to the UPRN and structured in a flat-file model.

AddressBase Plus has more records than AddressBase as it includes objects without postal addresses such as places of worship and community centres - as well as sub-divided properties. It lets you locate an address or property on a map, through the assigned X and Y coordinates.

Crucially, the cross-referencing information with OS MasterMap products via Topographic Identifiers (TOIDs) means you can view address data within a wider context.

Paying Royal Mail royalties as a commercial customer

Royal Mail royalties are included in the licence fee. A separate Royal Mail royalty fee applies if you license the AddressBase data on External Transaction Solution (ETS) terms.

File size

If the file size of your order is smaller than 2Gb, you can get it from our FTP server. in addition, public sector customers can download 5km chunk orders via our download service.

Data from Royal Mail’s PAF

The database is a vital component of the single address gazetteer database and is in each of the AddressBase products where there has been a match confirming the address to the LLPG address.


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What you get

Key features
  • Precision identification
  • Understand the nation with PAF
  • Track customer data
Addressing and location
  • Download
Data structure
Vector - Points
Update frequency
Every six weeks

Try this product with free sample data

Give it a try

Download a small area of AddressBase.

Or try out the real thing by applying for a Data Exploration Licence

How to access


Ordnance Survey's commercial network of Partners can help you with bespoke location solutions, derived from OS data

Ranging from global giants to single entrepreneurs, our Partners all use our location data to create innovative products and services. Their expertise ensures customers can benefit from using our data for a range of services. Find a partner for addressing and location mapping requirements.

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