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
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
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.
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
Inserts
29 279
Updates
83 730
Deletes
8 234
COU Populated Tile Count
5 103
AddressBase Plus
Inserts
45 736
Updates
420 603
Deletes
11 208
COU Populated Tile Count
7 064
AddressBase Premium
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:
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.
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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