Release Notes

Release notes listed here provide information about the current release of the OS MasterMap Topography Layer product and the previous eight releases.

Any interruptions or data issues impacting the OS MasterMap Topography Layer product will be documented on the Known Data Issues and Service Disruptions page.

OS MasterMap Topography Layer – January 2025 Release Note

This release note provides information about the January 2025 release of OS MasterMap (OSMM) Topography Layer.

OS MasterMap Topography Layer – October 2025 Release Note

This release note provides information about the October 2025 release of OS MasterMap (OSMM) Topography Layer.

OS MasterMap Topography Layer – September 2025 Release Note

This release note provides information about the September 2025 release of OS MasterMap (OSMM) Topography Layer.

OS MasterMap Topography Layer – July 2025 Release Note

This release note provides information about the July 2025 release of OS MasterMap (OSMM) Topography Layer.

OS MasterMap Topography Layer – June 2025 Release Note

This release note provides information about the June 2025 release of OS MasterMap (OSMM) Topography Layer.

OS MasterMap Topography Layer – April 2025 Release Note

This release note provides information about the April 2025 release of OS MasterMap (OSMM) Topography Layer.

OS MasterMap Topography Layer – March 2025 Release Note

This release note provides information about the March 2025 release of OS MasterMap (OSMM) Topography Layer.

OS MasterMap Topography Layer – February 2025 Release Note

This release note provides information about the February 2025 release of OS MasterMap (OSMM) Topography Layer.

OS MasterMap Topography Layer – December 2024 Release Note

This release note provides information about the December 2024 release of OS MasterMap (OSMM) Topography Layer.