March 2025 – Epoch 42

This release note provides information about the March 2025 release of OS Open TOID (Epoch 42).

Feature counts

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

Product	Source Product	CSV	GeoPackage
OS MasterMap Sites Layer	48 624	48 624	48 624
OS MasterMap Highways Network	20 750 549	20 750 549	20 750 549
OS MasterMap Topography Layer	486 046 032	486 046 032	486 046 032
Total	506 845 205	506 845 205	506 845 205

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 43), is scheduled for 13 April 2025.