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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.

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

Understanding the nation

Understanding the nation

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

Tracking customer data

Tracking customer data

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

Explore our data

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

Internal business use

If you wish to use AddressBase for internal business use you should contact one of our Partners, unless you’re in the energy & infrastructure sector, in which case please contact us so that we can advise you on next steps.

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.


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.

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.
CoverageGreat Britain - pre-defined areas are available, or you can define your own area of interest.


Success stories

OS data helps keep hospital open in Somerset

Ordnance Survey data provided critical evidence leading to Somerset Clinical Commissioning Group keeping stroke services at two hospitals.

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.