This page provides the details of known data issues in the OS MasterMap Topography Layer – Building Height Attribute product. Once resolved, details will be held until the next release of the product.
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Corruption affecting seven tiles in the April 2025 release of OS MasterMap Topography Layer – Building Height Attribute
An issue has been identified with the below files in the April 2025 release of the product:
NO0005.csv NO7075.csv NX6590.csv NZ9505.csv SE5080.csv SP5545.csv
NT2065.csv
These files have now been replaced for any new order submissions. However, if you received an April 2025 update order containing these files or accessed the data between 01 and 10 April 2025, you may encounter an issue in loading these files.
To resolve this, the files can be reordered or resupplied on request.
We apologise for any inconvenience caused and appreciate your understanding and cooperation.