# GB Address

The OS GB Address Collection is a complete, analytical and authoritative addressing dataset for Great Britain. It is designed to provide a detailed view of an address and its lifecycle.

## Collection applications

The OS GB Address Collection allows you to: 

* Keep your address data current with up-to-daily updates.  
* Utilise the richness of Local Authority data and analyse addresses by their classification, postal status and build status to create a detailed picture of a given area. 
* Access all addresses in Royal Mail’s Postcode Address File (PAF), with the ability to use PAF’s Unique Delivery Point Reference Number (UDPRN) alongside the Unique Property Reference Number (UPRN).
* Create mail shots using the Royal Mail address.
* Carry out spatial analysis and aggregation using the accurate rooftop coordinates provided for each address. 
* Easily identify and download addresses by pre-build, built and historic lifecycle stages. 
* Use the UPRN to easily link different data sets right down to a single address. 

<figure><img src="/files/R1IAJIsVRtqtOTUFcvE7" alt="Examples of Built Address and Royal Mail Address features and the attribution provided for these features. The visualisation shows an image of house and a shop. Pop ups against each image show what example attribution might look like for the Built Address features and Royal Mail Address features."><figcaption><p>Examples of Built Address and Royal Mail Address features and the attribution provided for these features.</p></figcaption></figure>

## Key elements

* A full representation of an address as you can view both the Royal Mail and Local Authority representations of it.
* Up-to-daily updates to data.&#x20;
* The simplified data model means there’s no need to be an addressing expert to use the data.
* Plug and play – the data is simple and quick to implement as you don't need to pre-process it before you use it.&#x20;
* Rich attribution ensures the data is straightforward to navigate and query.&#x20;
* Persistent unique identifiers with lifecycle information.
* The ability to select addresses from a specific lifecycle state (for example, Built Address and Pre-Build Address).
* Full UK address coverage available via accessing the OS GB Address and OS Islands Address Collections together. &#x20;
* Cross-references make it easy for you to link data in this collection with data from other OS NGD collections.&#x20;

## FAQs

Frequently asked questions (FAQs) about this collection and detailed answers are available from the [FAQs page](/osngd/getting-started/faqs.md#os-ngd-address-theme-faqs).

## Coverage

Great Britain.

## Default coordinate reference system

British National Grid (EPSG: 27700).

## Temporal filtering

The earliest date on which you can request a one-off snapshot of a date in the past for data in this collection is noted at the top of the individual feature type pages.

## Supply formats

GeoPackage or CSV (comma-separated values).

## Supply mechanism

GB Address data can be accessed through the [OS Data Hub](https://osdatahub.os.uk/) via OS Select+Build, the bespoke OS NGD download service. It can't be accessed through OS NGD API – Features or OS NGD API – Tiles.

## Using our data

* Included in the [Public Sector Geospatial Agreement](https://www.ordnancesurvey.co.uk/customers/public-sector/public-sector-geospatial-agreement) (PSGA) – therefore, it's free at point of use for Public Sector organisations. &#x20;
* Available to OS Partners for commercial resell in your solutions.&#x20;
* Available for organisations to try out for free for three months under the [Data Exploration Licence](https://www.ordnancesurvey.co.uk/licensing/data-exploration-licence#overview); this licence is primarily designed for organisations either considering becoming an OS Partner or who want to trial OS Premium data before working with an existing OS Partner.


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