AddressBase Products June 2025 – Epoch 119

This release note provides information about the June 2025 (Epoch 119) release of the AddressBase products. These products were released to customers on 12 June 2025.

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

• 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.

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.

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. 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. 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. 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.