# 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. 

<figure><img src="https://170091638-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0pZjHxkAvY7Mn6TqFBMD%2Fuploads%2FlJSZK5aJ4LSR4PyMkUwf%2FAddress%20-%20PAF%20-%20House%20Image.png?alt=media&#x26;token=76da54cf-65ea-4b73-b14f-4f162794ca63" 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;
* 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.&#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 NGD GB Address and 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;

### 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.&#x20;
* Available to OS Partners for commercial resell in your solutions.