Did he say "diagonally"?

Yes. I think he did.

So, as part of my research into grotty little back alleys and street plans, I remembered that there is a set of alley ways - one lovely and swish, the other a bit grotty and nasty, in the Wizarding world.

So, I've been looking at illustrations of Diagon Alley and Knockturn Alley, and found a street plan for how they are both laid out. :)
Pictures of the set from the Harry Potter films as reference, granted they are very brightly coloured and nowhere near our imagined colour scheme. :)

Also been checking out old pub fronts, which hopefully, we can get some nice pictures taken of on Tuesday in London. :)