I've worked in central Leeds for many years, and whilst I've never felt in danger, it does seem a bit more unruly since lockdown. I wonder if it's a thing about urban area in general.
As for London, I'm not there often, however i've not noticed much difference around Kings Cross, Waterloo etc.
As for London, I'm not there often, however i've not noticed much difference around Kings Cross, Waterloo etc.