Ordnance Survey – Great Britain's national mapping agency
![Ordnance Survey home page [logo]](/images/gui/logo-os.gif){kind=logo}
Classes of information
OS MasterMap®
Documents in this class (including additional information, formats and pricing where applicable)
OS MasterMap – information about the Mastermap service. HTML
OS MasterMap user guide – version 1.1 of the user guide to the OS Mastermap service HTML, PDF
OS MasterMap object catalogue HTML, PDF
OS MasterMap product specification HTML, PDF
OS MasterMap data conformance HTML
Visit the OS MasterMap web site information pages
Surveying and mapping HTML, PDF