Why?
The Ordnance Survey already produce the the most accurate and usable maps in the world. This website will not be able to match the level of data collected by OS on their higher scale maps (& I mean proper maps, not GPS maps for mouth-breathers who lack the ability to read road signs) so why create a challenge to their already threatened funding?
Perhaps we're turning into a bunch of tin-pot Thatcherities. Why not. It worked wonders for the trains after all.....
Biting the hand that feeds IT
