You may be right with older people, but I have my doubts that many under 40 would be able to point it out on a map. Perhaps my view is a bit jaundiced seeing what is presented on British quiz shows on the idiot box. It's possible they weed out those with a clue and air the mongs purely for the potentially humorous bellthronkery, but if your lot are anything like our smartphone fixated halfwits, I'll stand by that bet.
I believe that because everything is available at their fingertips on their phones, no one bothers thinking any more. Kill the internet and half of them would more than likely forget to breathe.