Release Notes

Release notes for the OS Open UPRN product.

OS Open UPRN – March 2025 release note

This release note provides information about the March 2025 (Epoch 117) release of OS Open UPRN.

OS Open UPRN – February 2025 release note

This release note provides information about the February 2025 (Epoch 116) release of OS Open UPRN.

OS Open UPRN – December 2024 release note

This release note provides information about the December 2024 (Epoch 115) release of OS Open UPRN.

OS Open UPRN – November 2024 release note

This release note provides information about the November 2024 (Epoch 114) release of OS Open UPRN.

OS Open UPRN – September 2024 release note

This release note provides information about the September 2024 (Epoch 113) release of OS Open UPRN.

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 this product.