Fact is, the pavement isn't your doorstep. Your doorstep is your doorstep. If you want a longer driveway, get one. If someone's smoking weed, causing a noise nuisance, leaning on your fence, robbing your house, by all means call the police / Southwark council / the A-Team. Whereas, if you just don't like the cut of their jib, then perhaps you need to be starting with the man in the mirror and asking him to change his ways.