Re: Best of British
Then again, adding things that aren't there can be problematic as well. I seem to recall* someone driving their car into a lake because their GPS insisted there was turn to be made, presumably on a nonexistent bridge or road.
Good of the Ordnance Survey (lovely Mars map too).
To my fellow map geeks: if you are cheap and/or not living in the US and also using Apple gear, might I cite PocketEarth as an extremely capable offline GPS app that runs off OpenStreetMap? Not affiliated in any way, just a very happy customer. An extra $5 or so unlocks topo map mode.
* Yes, it was in an episode of The Office (US version) as well, but I suspect they wouldn't have dared to come up with such a ludicrous plot idea if someone hadn't been stupid enough to do it in real life.