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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.

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

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

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.

Understanding the nation

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

Tracking customer data

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


Technical specification
Key FeaturesWhat this product offers
FormatComma separated value (CSV) and GML 3.2.1
Data structurePoints
AttributesRoyal Mail postal addresses, where matched to a UPRN; coordinates for each address.
Scale1:1250 to 1:10 000
Update frequency Every six weeks.
SupplyDVD and FTP (for orders under 2Gb). PSGA members can download 5km chunks.
CoverageGreat Britain - pre-defined areas are available, or you can define your own area of interest.

AddressBase FAQs


AddressBase is available under the following licences: LINK

Explore our data

You’re welcome to try out this data for free under our Data Exploration Licence.

Internal business use

When using OS data in your own business, you need our Framework Contract (Direct Customers) together with a data contract.

Creating products or services

To use this data commercially in your own products and services, or to distribute it, you will need to sign up to our Framework Contract (Partners) and a relevant defined use contract. This will vary depending on what you’re going to do with the data.

View all licences ›

How to get this product

Sample data

Give it a try

Download a small area of AddressBase sample data

Or you can apply for a Data Exploration Licence to try out the real thing.

Case studies

Helping Northumbrian Water create the first underground utilities map

Delivering estimated savings of around £1 million, Northumbrian Water and Ordnance Survey (OS) created the first Underground Infrastructure Hub for the North East.