# AddressBase Products June 2025 – Epoch 119 ## Record counts | Product | Full Supply Record Count | Change-Only Update Record Count | | ---------------------- | ------------------------ | ------------------------------- | | OS Open UPRN | 41 230 108 | N/A | | AddressBase | 30 720 584 | 119 944 | | AddressBase Plus | 38 417 757 | 2 268 393 | | AddressBase Premium | See rows below | See rows below | | Street | 1 516 400 | 8 955 | | Street Descriptor | 1 640 323 | 5 538 | | BLPU | 41 230 108 | 293 195 | | Classification | 45 048 547 | 177 703 | | LPI | 46 493 867 | 138 503 | | Organisation | 1 395 393 | 18 469 | | Delivery Point Address | 30 832 005 | 52 027 | | Application Cross Ref. | 199 661 448 | 4 638 074 | | Successor | 0 | 0 | {% hint style="info" %} * The Full Supply record counts are based on a Managed Great Britain Set (MGBS). If you have ordered your national coverage via the online ordering system using a polygon outline, then your counts may differ. * Please note that Change-Only Updates (COUs) are not available for the OS Open UPRN product. {% endhint %} ## Product supply comparison There is a difference in product counts between taking a national Managed Great Britain Set (MGBS) and a national Area of Interest (AOI). This is because the two supplies use different selection criteria. The differences are shown in the following table, allowing for you to validate your data holdings once you have loaded the latest release of AddressBase data. The national AOI refers to the pre-selection GB polygon from our download store. Therefore, if you have drawn your own AOI, the count will vary. If you are unsure of your supply type, please check this with your OS Relationship Manager. | Product | MGBS Full Count | National AOI Full Count | Difference | | ---------------------- | --------------- | ----------------------- | -------------- | | AddressBase | 30 720 584 | 30 720 584 | 0 | | AddressBase Plus | 38 417 757 | 38 417 734 | 23 | | AddressBase Premium | See rows below | See rows below | See rows below | | Street | 1 516 400 | 1 516 397 | 3 | | Street Descriptor | 1 640 323 | 1 640 320 | 3 | | BLPU | 41 230 108 | 41 230 081 | 27 | | Classification | 45 048 547 | 45 048 520 | 27 | | LPI | 46 493 867 | 46 493 839 | 28 | | Organisation | 1 395 393 | 1 395 391 | 2 | | Delivery Point Address | 30 832 005 | 30 832 005 | 0 | | Application Cross Ref. | 199 661 448 | 199 661 421 | 0 | | 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). ## Changed records If you receive a Change-Only Update (COU) supply for your AddressBase product, you will receive Insert, Update and Delete records within the supplied file. The following tables detail the numbers of these records which can be expected in an **MGBS supply**, and also how many tiles are affected if you take your supply as Changed Chunks. ### AddressBase | Change Type | Count | | ------------------------ | ------ | | Inserts | 25 566 | | Updates | 83 966 | | Deletes | 10 412 | | COU Populated Tile Count | 5 491 | ### AddressBase Plus | Change Type | Count | | ------------------------ | --------- | | Inserts | 42 185 | | Updates | 2 211 332 | | Deletes | 14 876 | | COU Populated Tile Count | 7 563 | ### AddressBase Premium | AddressBase Premium Table | Inserts | Updates | Deletes | | ------------------------- | --------- | ------- | --------- | | Street | 1 131 | 7 465 | 359 | | Street Descriptor | 1 186 | 3 991 | 361 | | BLPU | 36 990 | 253 219 | 2986 | | Classification | 56 145 | 96 264 | 25 294 | | LPI | 47 663 | 87 038 | 3 802 | | Organisation | 5 360 | 5 096 | 8 013 | | Delivery Point Address | 25 837 | 16 062 | 10 128 | | Application Cross Ref. | 2 215 974 | 426 221 | 1 995 879 | ## Source data currency The following information relates to the currency of the source data used in the creation of Epoch 119: | Data Source | Date | | ------------------------------------ | ------------- | | Royal Mail PAF | 08 May 2025 | | National Land and Property Gazetteer | 08 May 2025 | | One Scotland Gazetteer | 21 April 2025 | | VOA Non-Domestic Rates | 06 May 2025 | | VOA Council Tax | 06 May 2025 | | OS MasterMap Topography Layer | 10 April 2025 | | OS MasterMap Highways Network | 07 May 2025 | | Code-Point with Polygons | 01 April 2025 | | Boundary-Line | 01 May 2025 | ## Data issues ### AddressBase Details of live and resolved data issues for AddressBase will be communicated on the [AddressBase Known Data Issues page](/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-known-data-issues.md). This page will provide details of their impacts and updates on the expected time frame for their resolution. ### AddressBase Plus issues Details of live and resolved data issues for AddressBase Plus will be communicated on the [AddressBase Plus Known Data Issues page](/os-downloads/products/addresses-and-names-portfolio/addressbase-plus/addressbase-plus-known-data-issues.md). This page will provide details of their impacts and updates on the expected time frame for their resolution. ### AddressBase Premium Details of live and resolved data issues for AddressBase Premium will be communicated on the [AddressBase Premium Known Data Issues page](/os-downloads/products/addresses-and-names-portfolio/addressbase-premium/addressbase-premium-known-data-issues-service-disruptions-and-planned-maintenance.md). This page will provide details of their impacts and updates on the expected time frame for their resolution. ## Improvements in Epoch 119 ### Valuation Office Agency matching The match rates for Council Tax and Non-Domestic Rates for Epoch 119 are detailed as follows based on Valuation Office Agency (VOA) records up to 06 May 2025. The match rate is applicable to the AddressBase Premium product. | Data Source | Records Received | % Matched | | ------------------ | ---------------- | --------- | | Council Tax | 27 259 167 | 99.91 | | Non-Domestic Rates | 2 122 646 | 96.40 | ### Tertiary classifications Work is being undertaken to improve the classifications of records within the AddressBase products. This work has resulted in 45 877 more tertiary classifications present in Epoch 119 compared to Epoch 118. Indeed, 88.2**%** of these tertiary classification improvements are against residential codes. ## Next release The next release of AddressBase products, Epoch 120, is scheduled for **31 July 2025**. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-fundamentals/release-notes/addressbase-products-june-2025-epoch-119.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. 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