The very first Ordnance Survey (OS) map was published back in 1801, when their sole focus was on military maps. Obviously, a lot has changed since then.

A free service from Ordnance Survey opens up its maps to developers wanting to design their own applications or work on mashups Written by Adrian Bridgwater, Contributor Feb. 1, 2008, 7:33 a.m. PT ...

Ordnance Survey, the 232-year-old national mapping agency, has released its first ever official mapping app on Apple iOS devices, taking the iconic paper maps into the digital age.