AddressBase Products July 2025 – Epoch 120

This release note provides information about the July 2025 (Epoch 120) release of the AddressBase products. These products were released to customers on 31 July 2025.

Record counts

Product
Full Supply Record Count
Change-Only Update Record Count

OS Open UPRN

41 270 485

N/A

AddressBase

30 741 629

121 243

AddressBase Plus

38 452 285

477 547

AddressBase Premium

See rows below

See rows below

Street

1 517 722

6 124

Street Descriptor

1 641 715

2 909

BLPU

41 270 485

409 362

Classification

41 270 485

181 304

LPI

46 544 580

142 261

Organisation

1 397 065

18 469

Delivery Point Address

30 853 268

53 795

Application Cross Ref.

199 812 791

536 071

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

30 741 629

30 741 629

0

AddressBase Plus

38 452 285

38 452 261

24

AddressBase Premium

See rows below

See rows below

See rows below

Street

1 517 722

1 517 719

3

Street Descriptor

1 641 715

1 641 712

3

BLPU

41 270 485

41 270 456

29

Classification

41 270 485

45 085 816

69

LPI

46 544 580

46 544 550

30

Organisation

1 397 065

1 397 063

2

Delivery Point Address

30 853 268

30 853 268

0

Application Cross Ref.

199 812 791

199 812 762

29

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' in the AddressBase 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

29 279

Updates

83 730

Deletes

8 234

COU Populated Tile Count

5 103

AddressBase Plus

Change Type
Count

Inserts

45 736

Updates

420 603

Deletes

11 208

COU Populated Tile Count

7 064

AddressBase Premium

AddressBase Premium Table
Inserts
Updates
Deletes

Street

1 340

4 766

18

Street Descriptor

1 410

1 481

18

BLPU

42 746

364 247

2 369

Classification

62 130

94 342

24 832

LPI

53 762

85 450

3 049

Organisation

7 624

4 893

5 952

Delivery Point Address

29 693

15 672

8 430

Application Cross Ref.

179 975

327 464

28 632

Source data currency

The following information relates to the currency of the source data used in the creation of Epoch 120:

Data Source
Date

Royal Mail PAF

19 June 2025

National Land and Property Gazetteer

19 June 2025

One Scotland Gazetteer

02 June 2025

VOA Non-Domestic Rates

16 June 2025

VOA Council Tax

16 June 2025

OS MasterMap Topography Layer

22 May 2025

OS MasterMap Highways Network

05 June 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 120

Valuation Office Agency matching

The match rates for Council Tax and Non-Domestic Rates for Epoch 120 are detailed as follows based on Valuation Office Agency (VOA) records up to 16 June 2025. The match rate is applicable to the AddressBase Premium product.

Data Source
Records Received
% Matched

Council Tax

27 270 370

99.9

Non-Domestic Rates

2 123 017

96.4

Tertiary classifications

Work is being undertaken to improve the classifications of records within the AddressBase products. This work has resulted in 45 295 more tertiary classifications present in Epoch 120 compared to Epoch 119. Indeed, 88.15% of these tertiary classification improvements are against residential codes.

Next release

The next release of AddressBase products, Epoch 121, is scheduled for 04 September 2025.

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