# Islands Address
The OS NGD Islands Address Collection is a complete, analytical and authoritative addressing dataset for Northern Ireland, the Channel Islands and the Isle of Man. It is designed to provide a detailed view of an address and its lifecycle.
## Collection applications
The OS NGD Islands Address Collection allows you to:
* Keep your address data current with up to daily updates.
* Utilise the richness of additional attribution about each address 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.
Examples of Built Address and Royal Mail Address features and the attribution provided for these features.
## 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.
* New 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.
* Rich attribution ensures the data is straightforward to navigate and query.
* 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 NGD GB Address and Islands Address Collections together.
* Cross-references make it easy for you to link data in this collection with data from other OS NGD collections.
## FAQs
Frequently asked questions (FAQs) about this collection and detailed answers are available from the [FAQs page](https://docs.os.uk/osngd/getting-started/faqs#os-ngd-address-theme-faqs).
## Coverage
Northern Ireland, the Channel Islands, and the Isle of Man.
## Default coordinate reference system
European Terrestrial Reference System 89 (EPSG: ETRS89).
## 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
Islands 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.
* Available to OS Partners for commercial resell in your solutions.
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