> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-fundamentals/release-notes/addressbase-islands-may-2025-epoch-118.md). # AddressBase Islands May 2025 – Epoch 118 {% hint style="info" %} ### Object Without Postal Address (OWPA) enhancement in Epoch 118 for AddressBase Premium Islands and AddressBase Plus Islands There is a small uplift in this release of both AddressBase Premium Islands and AddressBase Plus Islands due to an improvement in the Object Without Postal Address (OWPA) features contained within these products. As a result of this uplift, COU counts are around 30% larger, in comparison to the 3 previous releases; this may result in slower processing times. {% endhint %} ## Record counts | Product | Full Supply Record Count | Change-Only Update Record Count | | --------------------------- | ------------------------ | ------------------------------- | | AddressBase Plus Islands | 1 162 955 | 17 958 | | AddressBase Premium Islands | See rows below | See rows below | | Street | 48 792 | 321 | | Street Descriptor | 48 792 | 32 | | BLPU | 1 241 870 | 17 908 | | Classification | 1 241 870 | 3 589 | | LPI | 1 251 678 | 4 131 | | Organisation | 38 842 | 254 | | Delivery Point Address | 979 023 | 14 044 | | Application Cross Ref. | 1 307 510 | 3 429 | | 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 | 8 257 | | Updates | 9 464 | | Deletes | 237 | ### AddressBase Premium Islands | AddressBase Premium Islands Table | Inserts | Updates | Deletes | | --------------------------------- | ------- | ------- | ------- | | Street | 32 | 289 | 0 | | Street Descriptor | 32 | 0 | 0 | | BLPU | 2 806 | 14 937 | 165 | | Classification | 2 806 | 618 | 165 | | LPI | 2 825 | 1 141 | 165 | | Organisation | 156 | 42 | 56 | | Delivery Point Address | 13 190 | 213 | 641 | | Application Cross Ref. | 2 773 | 360 | 296 | | Successor | 0 | 0 | 0 | It is important that COUs are processed with Deletes first, then Inserts and Updates. This is to ensure that updates are applied in the correct order. Guidance on this can be found in the '[Working with COU data' page in the AddressBase Core Getting Started Guide](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-getting-started-guide/working-with-cou-data.md). ## Source data currency The following information relates to the currency of the source data used in the creation of **Epoch 118**: | Data Source | Date | | -------------------------- | ------------- | | Pointer (Northern Ireland) | 27 March 2025 | | DigiMap (Channel Islands) | 27 March 2025 | | Isle of Man | 27 March 2025 | | Royal Mail PAF | 27 March 2025 | ## 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 119**, is scheduled for **12 June 2025**. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. 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