why should it be a problem? in the UK, methadone is normally dispensed from a regular pharmacy, just like any other prescription you might get from your doctor. I wonder if what you are seeing is that the clinic has been placed in a neighbourhood that already had high crime/homelessness/etc. since that is where the addicts who need its services are? it just seems odd that a clinic would be placed in an affluent area, where property costs are probably high, and the service users have to travel to get there, but maybe it's an american thing?
here's another turn of phrase you might find handy: choose your battles.