# August 2025 – Epoch 45

## 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 | 20 811 243      | 20 811 243      | 20 811 243      |
| OS MasterMap Topography Layer | 487 941 849     | 487 941 849     | 487 941 849     |
| **Total**                     | **508 802 168** | **508 802 168** | **508 802 168** |

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

{% hint style="info" %}
In this release, the tile ‘NW’ was found to be noticeably larger than the previous release (\~5% larger) in both CSV and GPKG formats. OS data improvement work in the area on a small number of transport features has caused a larger than usual percentage change. This is expected, as the tile 'NW' only includes a small area of land around The Rhins of Galloway in South Western Scotland, and most of the tile is sea. 
{% endhint %}

## Next release

The next release of OS Open TOID (Epoch 46), is scheduled for **15 September 2025**.