OS MasterMap ViewerIf you want to view GML datasets other than OS MasterMap Data (UK only), please download our generic GML Viewer

In order to use the OS MasterMap Viewer you first need to register for an activation code which will be emailed you.

Please complete the following registration form to receive an activation code. Please ensure you included a vaild email address – your activation code will be emailed to you shortly.

After receiving your code, download the appropriate installer and run it on your machine, typing in the activation code when prompted.

Register for your OS MasterMap Viewer activation code

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  Please tick this box if you do not wish to be kept up to date on the Viewer and other Snowflake product offerings