To someone from the US (and much of the rest of the world), one of the many endearing idiosyncrasies of England is that they drive on the “wrong” side of the road. One would think that this would have little impact on the pedestrian but that would be wrong. For example, which side of the sidewalk do you walk on? How about people movers at airports? Escalators? Etc.
As a pedestrian in London for the first time, I appreciated the courtesy of the warnings painted at many crosswalk because more than once, I looked left as I would at home, stepped into the crosswalk and then was aware that traffic was bearing down on me on the “wrong” side of the road.
Incidentally, without trying to sound pedantic, 34% of the world’s population drives on the left. The French used to drive on the left but Napoleon changed it. I don’t know why.