The OS MasterMap Imagery Layer adds a visual and contextual capability to the other OS MasterMap Layers and OS data.
Product guide (PDF)
OS MasterMap Imagery Layer aims to provide a reliable and consistent source of orthorectified aerial photography for general business use in Great Britain.
Release note (PDF)
This release note provides information about the May release of OS MasterMap Imagery Layer. Updated May 2019.
OS MasterMap Imagery Layer FAQs
The technical specification contains details on the visual appearance of the ortho images within the imagery layer. It includes positional and geometric fidelity requirements and detail on mosaicing and edgematching between areas of imagery collected at different times.
|Key Features||What this product offers|
|Format||JPEG, TIFF and ECW|
|Metadata||XML format for each block, including day, month and year flown|
|Update frequency||Quarterly (February, May, August and November), as part of our three year cyclic revision programme synchronised with large-scale data updates.|
|Supply||Download or, for large orders, portable hard drive|
|Product refresh||Quarterly full supply or change-only update|