"Seriously, pedestrians in Norway cross without looking. And - I have to stress that - it really does work."
Well, except more pedestrians die in Norway than the UK, but if it works for you.
(Of course more die in the UK. I mean, per capita, per car and per km driven. In all cases Norway has more deaths than the UK.)
Edit: two other posters have mentioned Vietnam and Estonia. Vietnam obviously has a much higher death rate on the road, but also Estonia. So going by deaths alone,
Vietnam < Estonia < Norway < UK.
Edit 2: I actually bothered to order that list. The UK and Sweden are the two safest places in the world, it appears, for RTCs (road traffic collisions).