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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. 

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

OS data helps keep hospital open in Somerset

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.

Read the full case study

Helping Northumbrian Water create the first underground utilities map

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.

Read the full case study

Technical specification

Key FeaturesWhat this product offers

Comma separated value (CSV) and GML 3.2.1

Data structure



Royal Mail postal addresses, where matched to a UPRN; coordinates for each address.


1:1250 to 1:10 000

Update frequency

Every six weeks.




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