Last week the British national mapping agency the Ordnance Survey opened its doors providing for the first time in its 263 year history free online unrestricted public access to its maps and mapping data.

The Ordnance Survey (OS)  has made avilable its 1:250,000 series  maps on-line and is also providing it’s map data for download together with a set of Openspace API tools for embedding the maps into websites and apps.

The London Times has an interesting overview of the history and changes at the OS.