05 November 2024

This release note provides information about the release of the AddressBase Core product on 05 November 2024.

Record counts

Product	Full Supply record count[*]	Change-Only Update record count
AddressBase Core	34 518 399	54 822

*These counts are based on a Managed Great Britain Set (MGBS). If you ordered your national coverage via the online ordering system using a polygon outline, your counts may differ.

Product supply comparison

There is a difference in record counts between taking a national Managed Great Britain Set (MGBS) and the national 5km-tile supply. This is because the two supplies use different selection criteria. The difference in record counts is shown in the following table, allowing you to validate your data holdings once you have loaded the latest release of AddressBase Core.

Product	MGBS Full Count	National 5km tiled supply	Difference
AddressBase Core	34 518 399	34 518 392	7

A small difference in record counts is expected due to there being several features supplied in the MGBS which fall outside of the tiled area.

Changed records

If you receive a Change-Only Update (COU) supply for your AddressBase Core product, you will receive Insert, Update and Delete records within the supplied file. The following table details the numbers of these records which can be expected in the COU supply of the product:

Change type	Count
Inserts	6 952
Updates	36 796
Deletes	11 074
COU populated 5km tile count	4 362

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.

Known issues

There has been one new issue identified in this release of AddressBase Core. A Scottish record has been incorrectly matched to a Royal Mail record. As a result of this, the Scottish record (UPRN = 35030393) has been incorrectly assigned a ‘POST_TOWN’ value of ‘NEWCASTLE’ and incorrect ‘POSTCODE’ of ‘BT33 0GT’. The nine other addresses on this street remain unaffected.

Source data currency

The following information relates to the currency of the source data used in the creation of this release of AddressBase Core:

Data source	Date
Royal Mail Postcode Address File (PAF)	01 November 2024
National Land and Property Gazetteer	01 November 2024
One Scotland Gazetteer	28 October 2024
OS MasterMap Topography Layer	05 September 2024