# AddressBase Plus Islands Documentation

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**Product nearing its End of Life (withdrawal) date**

The AddressBase Plus Islands product will become End of Life on 29 November 2027. As of this date, Ordnance Survey will cease to maintain or publish updates to the product.

Further information and details about the recommended product migration pathway are available on the [End of Life Notice – AddressBase Plus Islands page](https://docs.os.uk/os-downloads/resources/product-resources/end-of-life-product-notices/end-of-life-notice-addressbase-plus-islands).
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An addressing gazetteer offering full lifecycle information of a property for Northern Ireland, Isle of Man and the Channel Islands.

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**This product is updated every six weeks.**
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<figure><img src="https://1897589978-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FcNpJpLP8RROUaWVQo5ea%2Fuploads%2FQRaI6MZeYCiknaqDiXP3%2Faddressbase-islands-product.x6981000a.webp?alt=media&#x26;token=01788965-04e5-4de9-a74f-ef699534bc39" alt="A representation of AddressBase Iselands data" width="563"><figcaption><p>A representation of AddressBase Islands data.</p></figcaption></figure>

AddressBase Plus Islands contains current properties including addresses sourced from local authorities, Ordnance Survey and Royal Mail, all provided with an UPRN (Unique Property Reference Number), for Northern Ireland, Channel Islands and the Isle of Man.

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.

{% hint style="info" %}
Please see [Getting started with AddressBase products](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-getting-started-guide) for instructions on how to load and work with AddressBase data; this is a composite guide for [AddressBase](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase), [AddressBase Plus](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-plus) and [AddressBase Plus Islands](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-plus-islands).
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{% tabs %}
{% tab title="Benefits" %}
**Addressing outside of Great Britain**

For the first time, AddressBase customers can access over 1 million extra records complete with the Unique Property Reference Number (UPRN), outside of Great Britain. Get a three-month free trial of AddressBase Islands data by signing up to our Data Exploration Licence.

**Boost your marketing ROI**

AddressBase Islands means you can run successful national campaigns – or build awareness in new markets, targeting households in properties converted into flats, for example.

**Available in two versions**

AddressBase Islands is available in two versions, allowing you to attach it to your existing Great Britain AddressBase product, whether that's AddressBase Plus or AddressBase Premium.

**Straightforward licensing**

We offer the same style of licence for AddressBase Islands as existing AddressBase products. This ensures you can use your AddressBase Islands data in a consistent way across the United Kingdom and Crown Dependencies.
{% endtab %}

{% tab title="Use Cases" %}
**Consistent property information**

For major businesses offering household services nationwide, taking AddressBase Islands means you have consistent property information for Northern Ireland, the Channel Islands and the Isle of Man on tap from a single source.

**Reliable records**

in the busy call centre environment, your staff will always get results no matter where the address is located, and because our data is regularly updated, your records will be more reliable, too.
{% endtab %}

{% tab title="Summary" %}

* **Access:** Download via the [OS Data Hub](https://osdatahub.os.uk/)
* **Data theme:** Address
* **Data structure:** Vector – Points
* **Coverage:** Northern Ireland, Channel Islands and Isle of Man
* **Scale:** 1:1 250 to 1:10 000
* **Format:** CSV, GML 3.2.1
* **Ordering area:** Full Islands Set
  {% endtab %}

{% tab title="Additional Information" %}
**Paying Royal Mail royalties as a commercial customer**

Royal Mail royalties are included into the licence fee if you are already a Great Britain AddressBase product customer. Additional Royal Mail royalties will apply if you aren't an existing Great Britain customer.

**Differences between the two AddressBase Island products**

There are two AddressBase Islands products: AddressBase Plus Islands and AddressBase Premium Islands.

* **AddressBase Plus Islands** contains current properties including addresses sourced from Local Authorities, Ordnance Survey and Royal Mail, all provided with a UPRN (Unique Property Reference Number), for Northern Ireland, the Channel Islands and the Isle of Man. 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.
* **AddressBase Premium Islands** provides the most detailed view of an address and its lifecycle for Northern Ireland, the Channel Islands and the Isle of Man. It has more records than AddressBase Plus Islands as it provides all the information relating to an address or property from creation to retirement. The product contains Local Authority, Ordnance Survey and Royal Mail addresses. This includes provisional addresses (proposed planning developments), and historic information (demolished properties) where available.

Ordnance Survey addresses are added to the AddressBase Premium Islands product where necessary to ensure the schema meets the core AddressBase products.

**Royal Mail's Postcode Address File**

The Islands products contain Royal Mail's Postcode Address File (PAF). This is a vital component of both Islands products. Royal Mail information will therefore be present where a match can be made between the Local Authority address and an address from Royal Mail.

**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.
{% endtab %}
{% endtabs %}

## 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](https://www.ordnancesurvey.co.uk/customers/public-sector/psga-member-finder).

AddressBase Plus Islands will reach its [end of life](https://docs.os.uk/os-downloads/resources/product-resources/end-of-life-product-notices/end-of-life-notice-addressbase-plus-islands) in Autumn 2027. Until then you can access the data via the [OS Data Hub](https://osdatahub.os.uk/).

## Other ways to access this data

AddressBase Plus Islands will reach its [end of life](https://docs.os.uk/os-downloads/resources/product-resources/end-of-life-product-notices/end-of-life-notice-addressbase-plus-islands) in November 2027. We recommend that customers migrate to the [OS Islands Address Collection](https://docs.os.uk/osngd/data-structure/address/islands-address) as it contains data that enables you to access Local Authority address information, Unique Property Reference Numbers (UPRNs) and premium attribution. Benefits to using OS Islands Address Collection data over AddressBase Plus Islands data are listed on the [AddressBase Plus Islands End of Life notification](https://docs.os.uk/os-downloads/resources/product-resources/end-of-life-product-notices/end-of-life-notice-addressbase-plus-islands#what-are-the-benefits-to-using-islands-address-collection-data).

## What's next?

To access documentation and resources relating to this product, please refer to the following:

<table data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td><h4>AddressBase Fundamentals</h4></td><td>The AddressBase Fundamentals pages provide an overview of the 'family' of AddressBase products, covering key elements of design for AddressBase products.</td><td></td><td><a href="addressbase-fundamentals">addressbase-fundamentals</a></td><td data-object-fit="cover" data-alt="Example image showing AddressBase product data over a background map."><a href="https://1897589978-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FcNpJpLP8RROUaWVQo5ea%2Fuploads%2FQu3luYQMBF3U429YzbYb%2FAddressBase-Plus-2.png?alt=media&#x26;token=df965dfd-788d-4673-b860-7c8332e77244">AddressBase-Plus-2.png</a></td></tr><tr><td><h4>Getting Started Guide</h4></td><td>The getting started guide provides instructions for using three AddressBase products in different software applications. Users with limited technical knowledge will be able to follow this guide.</td><td></td><td><a href="addressbase/addressbase-getting-started-guide">addressbase-getting-started-guide</a></td><td data-object-fit="cover" data-alt="Example image showing AddressBase Plus Islands product data over a background map."><a href="https://1897589978-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FcNpJpLP8RROUaWVQo5ea%2Fuploads%2FvtegALy4RxhDAw2ldiTt%2FAddressBase-Islands-1.png?alt=media&#x26;token=7723f624-46e2-45ef-a597-7da2d5e69ff1">AddressBase-Islands-1.png</a></td></tr><tr><td><h4>Technical Specification</h4></td><td>The technical specification provides detailed technical information about AddressBase Plus Islands. It is targeted at technical users and software developers.</td><td></td><td><a href="addressbase-plus-islands/addressbase-plus-islands-technical-specification">addressbase-plus-islands-technical-specification</a></td><td data-object-fit="cover" data-alt="Example image showing AddressBase Plus Islands product data over a background map."><a href="https://1897589978-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FcNpJpLP8RROUaWVQo5ea%2Fuploads%2F3tFoGaytV2hij7yat5Wt%2FAddressBase-Islands-2.png?alt=media&#x26;token=45bbbb37-657b-4362-8538-adc1374f53a3">AddressBase-Islands-2.png</a></td></tr><tr><td><h4>Downloads</h4></td><td>The downloads page provides links and resources to support the application of AddressBase Plus Islands within your environment.</td><td></td><td><a href="addressbase-plus-islands/addressbase-plus-islands-downloads">addressbase-plus-islands-downloads</a></td><td></td></tr><tr><td><h4>Ordnance Survey Website</h4></td><td>View AddressBase Plus Islands product information and find out how to get this product on the OS website.</td><td></td><td><a href="https://www.ordnancesurvey.co.uk/products/addressbase-islands">https://www.ordnancesurvey.co.uk/products/addressbase-islands</a></td><td></td></tr></tbody></table>

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New users should start with the Fundamentals pages to gain high-level insight into AddressBase products. The Getting Started Guide will help you to begin using product data in different software systems. The Technical Specification contains detailed technical insights.
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