Ordnance Survey – Great Britain's national mapping agency
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User guide and technical specifications
The following user guides are specific to the relevant OS MasterMap layers and include both the general product overview and technical specification.
- Topography Layer (3.27 Mb PDF)
- Address Layer and Address Layer 2 user guide (3.5 Mb PDF)
- Address Layer technical specification (404Kb PDF)
- Address Layer 2 technical specification (1.16Mb PDF)
- ITN Layer (3.26 Mb PDF)
- Imagery Layer (1.35Mb PDF)
Implementing OS MasterMap
An essential guide and a series of information sheets to help with implementation of OS MasterMap.