I use my ancient birkies as slippers but I need more support for walking.
I have a favourite pair of Hotter laceups but when I bought a court shoe from them (comfy in the shop) I wore them to a wedding and they were screamingly uncomfortable. So I reckon there is no such thing as the perfect shoe for everyone.
Lack of public toilets in towns.
To think that London, or anywhere else for that matter, does not belong to any one demographic