AddressBase Plus
Here you will find all documentation for the AddressBase Plus product.
AddressBase Plus contains current properties using addresses sourced from Local Authorities, Ordnance Survey and Royal Mail for England, Wales and Scotland. The product currently contains approximately 37 million records.
The product contains all current addresses validated from Local Custodians and non-postal addresses such as ponds, electricity sub-stations and telephone boxes are also included.
The product enables the end-user to locate an address or property on a map using either X, Y coordinates supplied on a British National Grid or Latitude and Longitude coordinates provided on an ETRS89 projection, and display the Local Authority address elements or the Royal Mail address elements where matched.

Flat file model
AddressBase Plus is structured in a flat file model – containing current properties and addresses sourced from local authorities, Ordnance Survey and Royal Mail matched to the UPRN.
Accuracy guaranteed
The address information is sourced from 380 local authorities across Great Britain, our own large-scale mapping, Royal Mail and the Valuation Office Agency.
Useful addresses
As well as 28 million defined properties, Ordnance Survey have included more than 7 million local authority addresses, such as depots and church halls, places of worship and community centres.
Property classification
Understanding the need to categorise properties, Ordnance Survey incorporated a four-level classification scheme that explains the function of each property.
Individual address referencing for direct marketing teams
Take your data analysis to the next level by referencing data to individual addresses (such as flats) rather than mail delivery points (houses divided into flats).
Property classification
Understanding the need to categorise properties, Ordnance Survey incorporated a four-level classification scheme that explains the function of each property.
Access: Download
Data theme: Address
Data structure: Vector – Points
Coverage: Great Britain
Scale: 1:1 250 to 1:10 000
Format: CSV, GML 3.2.1
Ordering area: All of Great Britain or customisable area (5km² tiles or user-defined polygon)
Advantage of AddressBase Plus over AddressBase
AddressBase contains Royal Mail PAF addresses and assigns an x and y coordinate to every address. This lets you carry out only relatively basic analysis.
AddressBase Plus also includes current properties and addresses sourced from local authorities, Ordnance Survey and Royal Mail. Records are matched to the UPRN and structured in a flat-file model.
AddressBase Plus holds more records than AddressBase as it includes objects without postal addresses, such as subdivided properties, places of worship and community centres. It also allows the end-user to locate an address or property on a map, through the assigned x and y coordinates.
Crucially, cross-referencing the information with OS MasterMap products via the OS MasterMap Topography Layer and Topographic Identifiers (TOIDs) lets you view address data within a wider geographic context.
Properties yet to be built
Properties yet to be built do not appear in AddressBase Plus. You'd need AddressBase Premium for this information. It's ideal when you're planning the future provision of infrastructure services such as sewerage or high-speed broadband.
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.
How to get this product
Access to this product is free for PSGA (Public Sector Geospatial Agreement) Members. You can check if your organisation is a member of the PSGA on the OS website.
The AddressBase Plus product page on the OS website has advice on how to get the product for businesses, developers, OS Partners and PSGA Members (i.e. government and the public sector).
Alternatively, you can try out the full product by applying for a Data Exploration license.
Sample data
Download AddressBase Plus sample data
You can download sample data for the product for free from the OS Data Hub. The sample data are available in CSV and GML 3.2 formats and cover one area (Exeter).
Visualise AddressBase Plus sample data online
This product is available to try out free online using one of our three sets of sample data (Exeter, Newport and Inverness) through the OS MasterMap Product Viewer:
What's next?
To access documentation and resources relating to this product, please refer to the following:
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