AddressBase Products February 2024 – Epoch 108

Record counts

1. These 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.

2. Change-Only Updates 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.

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

AddressBase Plus

AddressBase Premium

Source data currency

The following information relates to the currency of the source data used in the creation of Epoch 108:

Data issues

AddressBase Plus issues

Affected output formats: CSV and GML

• There are 6 781 Unique Property Reference Numbers (UPRNs) which reference a Parent UPRN that cannot be found in the product. This is because the Parent UPRN is either provisional or historic and is not matched to the Royal Mail Postcode Address File (PAF) or Valuation Office Agency (VOA) record, meaning that it is not included in the AddressBase Plus product as per the existing background logic rules.

• There are 279 records with a sao_start_no or sao_text that have no Parent UPRN in the product. This is because the Parent UPRN is a historical record which is included as part of the logic for record inclusion in the AddressBase Plus products.

Improvements in Epoch 108

Valuation Office Agency matching

The match rates for Council Tax and Non-Domestic Rates for Epoch 108 are detailed as follows based on Valuation Office Agency (VOA) records up to 15 January 2024. The match rate is applicable to the AddressBase Premium product.

Tertiary classifications

Work is being undertaken to improve the classifications of records within the AddressBase products. This work has resulted in 49 778 more tertiary classifications present in Epoch 108 compared to Epoch 107. Indeed, 88.78% of these tertiary classification improvements are against residential codes.

PAF matching

The following graph shows the number of Postcode Address File (PAF) matched records in AddressBase by epoch:

Notification of Epoch 109’s Improvement in Historic BLPU State Code Completeness and Large Release Size

Summary

The release will enhance clarity and consistency of lifecycle representation within product.

A conformance improvement will be delivered for BLPU State attribute for records where the BLPU Logical Status is 8 (historic) and BLPU State is null; for increased completeness, BLPU State Code will be populated with value 4 (no longer existing) and date stamped for the change applied.

Issue description

The BLPU state identifies the current lifecycle stage of a property (or object) and is additional to the mandatory LOGICAL_ STATUS field.

The BLPU code is an optional attribute for Local Authority Custodians to complete and therefore this attribute may be NULL in product.

An improvement to the completeness of the BLPU State Code was identified as a quality enhancement for lifecycle information as values for BLPU state code 4 can be accurately inferred from a Logical Status of 8. This will allow the data to be interpreted more easily by removing conflict between addresses with a historic logical status and no BLPU state.

All nations within GB and the Islands product regions will benefit from this improvement, as such, it will impact approximately 1.2 million records for a Full Supply.

Impact

This quality improvement will be delivered in the next release, Epoch 109, and will mean a larger than usual supply of changes.

No special action will be required to load the release differently.

Next release

The next release of AddressBase products, Epoch 109, is scheduled for Tuesday 05 April 2024.