I suppose, Minxie, if you always vizualise the alphabet vertically than saying the letter above r makes sense.
To me it is confusing, as I vizualise the alphabet horizontally.
In Primary one we didn't have a table of the alphabet, but pictures A a for apple etc. which the teacher replaced with the nest letter - they were on some kind of flip-over system.
This way be why I see the alphabet in a straight line from A ot Z.
To think that London, or anywhere else for that matter, does not belong to any one demographic