September 2025 – Epoch 46

This release note provides information about the September 2025 release of OS Open TOID (Epoch 46).

Feature counts

Feature counts for this release are provided in the following table:

Product	Source Product	CSV	GeoPackage
OS MasterMap Sites Layer	49 076	49 076	49 076
OS MasterMap Highways Network	20 823 530	20 823 530	20 823 530
OS MasterMap Topography Layer	488 319 276	488 319 276	488 319 276
Total	509 191 882	509 191 882	509 191 882

There are no missing features and no duplicated TOIDs in this release. No significant errors have been identified.

Next release

The next release of OS Open TOID (Epoch 47) is scheduled for 13 October 2025.