# AddressBase Islands Products May 2026 – Epoch 127

## Record counts

| Product                     | Full Supply Record Count | Change-Only Update Record Count |
| --------------------------- | ------------------------ | ------------------------------- |
| AddressBase Plus Islands    | 1 173 958                | 4 130                           |
| AddressBase Premium Islands | See rows below           | See rows below                  |
| Street                      | 49 244                   | 166                             |
| Street Descriptor           | 49 244                   | 29                              |
| BLPU                        | 1 251 714                | 4 580                           |
| Classification              | 1 251 714                | 1 791                           |
| LPI                         | 1 262 200                | 2 623                           |
| Organisation                | 37 985                   | 88                              |
| Delivery Point Address      | 988 127                  | 2 147                           |
| Application Cross Ref.      | 1 316 735                | 2 147                           |
| Successor                   | 0                        | 0                               |

## Changed records

If you receive a Change-Only Update (COU) supply for your AddressBase Islands product, you will receive Insert, Update and Delete records within the supplied file. The following tables detail the count of these records.

### AddressBase Plus Islands

| Change Type | Count |
| ----------- | ----- |
| Inserts     | 1 137 |
| Updates     | 2 661 |
| Deletes     | 638   |

### AddressBase Premium Islands

| AddressBase Premium Table | Inserts | Updates | Deletes |
| ------------------------- | ------- | ------- | ------- |
| Street                    | 27      | 139     | 0       |
| Street Descriptor         | 27      | 2       | 0       |
| BLPU                      | 898     | 3 410   | 272     |
| Classification            | 898     | 621     | 272     |
| LPI                       | 972     | 1 379   | 272     |
| Organisation              | 20      | 24      | 44      |
| Delivery Point Address    | 1 025   | 182     | 159     |
| Application Cross Ref.    | 926     | 867     | 354     |
| Successor                 | 0       | 0       | 0       |

It's important that COUs are processed with Deletes first, then Inserts and Updates. This is to ensure that updates are applied in the correct order. Further guidance on this can be found in '[Working with COU data](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-getting-started-guide/working-with-cou-data)' in the AddressBase Getting Started Guide

## Source data currency

The following information relates to the currency of the source data used in the creation of Epoch 127:

| Data Source                                                     | Date          |
| --------------------------------------------------------------- | ------------- |
| <p>Pointer (Northern Ireland)</p><h3 id="data-issues"><br></h3> | 01 April 2026 |
| DigiMap (Channel Islands)                                       | 08 April 2026 |
| Isle of Man                                                     | 09 April 2026 |
| Royal Mail PAF                                                  | 09 April 2026 |

## Data issues

### AddressBase Plus Islands issues

Details of live and resolved data issues for AddressBase Plus Islands will be communicated on the [AddressBase Plus Islands Known Data Issues page](/os-downloads/products/addresses-and-names-portfolio/addressbase-plus-islands/addressbase-plus-islands-known-data-issues.md). This page will provide details of their impacts and updates on the expected time frame for their resolution.

### AddressBase Premium Islands issues

Details of live and resolved data issues for AddressBase Premium Islands will be communicated on the [AddressBase Premium Islands Known Data Issues page](/os-downloads/products/addresses-and-names-portfolio/addressbase-premium-islands/addressbase-premium-islands-known-data-issues.md). This page will provide details of their impacts and updates on the expected time frame for their resolution.

## Next release

The next release of AddressBase Islands products, Epoch 128, is scheduled for **25 June 2026.**


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