Ordnance Survey – Great Britain's national mapping agency
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The questions below are specifically for OS MasterMap Imagery Layer. Please click on the frequently asked question to view the answer.
If you wish to search all the OS MasterMap FAQs please use the search box on the right, or return to the generic OS MasterMap FAQs page.
What is the difference between geocorrected and orthorectified imagery?
How closely does Imagery Layer align with other OS MasterMap layers?
What is the level of quality that Ordnance Survey has applied to its imagery?
When will Imagery Layer coverage of all of Great Britain be available?
How frequently will OS MasterMap Imagery Layer be updated?
What format is OS MasterMap Imagery Layer delivered in?
How do I georeference OS MasterMap Imagery Layer tiles?
In Imagery Layer, what do you mean by 'seamless imagery'?
What will be the oldest imagery in OS MasterMap Imagery Layer?
Can I obtain archived OS MasterMap imagery?
Will OS MasterMap Imagery Layer tiles include metadata information?