I agree with you. That alleyway seems to be a problem so it might even be an idea to have some posters made up to warn muggers that it is being closely watched.
I've got £50 ready to donate to some form of community-based crime prevention scheme as soon as someone wants to kick this off.
On another matter, GlassHalfFull, after living in FH for 40 years I reckon it's time to change your name. With property prices as they are right now how about 'GlassOverflowing'? - unless you're renting, in which case it'll be more like 'SwappedGlassForPaperCup'.