June 2026 – Epoch 53

This release note provides information about the June 2026 release of OS Open TOID (Epoch 53).

Feature counts

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

Product	Source Product	CSV	GeoPackage
OS MasterMap Sites Layer	49 347	49 347	49 347
OS MasterMap Highways Network	21 109 129	21 109 129	21 109 129
OS MasterMap Topography Layer	491 962 627	491 962 627	491 962 627
Total	513 121 103	513 121 103	513 121 103

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 54), is scheduled for 10 August 2026.