December 2025 – Epoch 48

This release note provides information about the December 2025 release of OS Open TOID (Epoch 48).

Feature counts

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

Product	Source Product	CSV	GeoPackage
OS MasterMap Sites Layer	49 197	49 197	49 197
OS MasterMap Highways Network	20 865 185	20 865 185	20 865 185
OS MasterMap Topography Layer	489 574 698	489 574 698	489 574 698
Total	510 489 080	510 489 080	510 489 080

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 49), is scheduled for 05 January 2026.