Release notes for the OS Open UPRN product over the last year.
Any interruptions or data issues impacting the OS Open UPRN product will be documented on the Known Data Issues and Service Disruptions page.
OS Open URPN is refreshed on a six-weekly basis, in-line with the AddressBase Epoch dates published on the 'Product Refresh Dates' dates page. (The AddressBase release notes include information on the AddressBase, AddressBase Plus, AddressBase Premium and OS Open UPRN products, including the Full Supply record count for OS Open UPRN.)
Areas of Interest (AOI) orders and Change-Only Updates (COUs) are not available for OS Open UPRN.
This release note provides information about the August 2026 (Epoch 129) release of OS Open UPRN.
This release note provides information about the June 2026 (Epoch 128) release of OS Open UPRN.
This release note provides information about the May 2026 (Epoch 127) release of OS Open UPRN.
This release note provides information about the April 2026 (Epoch 126) release of OS Open UPRN.
This release note provides information about the February 2026 (Epoch 125) release of OS Open UPRN.
This release note provides information about the January 2026 (Epoch 124) release of OS Open UPRN.
This release note provides information about the November 2025 (Epoch 123) release of OS Open UPRN.
This release note provides information about the October 2025 (Epoch 122) release of OS Open UPRN.
This release note provides information about the September 2025 (Epoch 121) release of OS Open UPRN.
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