UPDATE FROM POST #170
This morning I spoke to about 20 users and dealers.
As I expected they found the situation highly amusing, and were unanimous in their thoughts that whatever you do will be taken as a challenge, and they'll just get worse, calling in reinforcements if necessary.
I suggested ideas like creating smells, putting up fences or gates etc., but they just confirmed what I have seen here for years, that it will make no difference. Fences get torn down, and gates get forced open or even removed.
They see any space they occupy as their territory, and will defend it enthusiastically.
Remember, for them any interference in their activities is a welcome distraction from boredom. It gives them something to do, and they enjoy it in a rather perverse way.
For the property owners infested with this problem it's a different matter; they quite rightly take it very seriously, and eventually it wears them down, and starts to affect their quality of life and their mental health.
Unfortunately drug addicts and dealers, and the crime and prostitution that goes to fund that lifestyle, is so widespread now that even if the authorites succeed in moving them on, they only move them to another space where they remain problematic. Unless the authorities banish them all to some lonely and inaccessable island, they will just continue to kick the can down the road.
Based on this morning's conversations with addicts and dealers, and four years of documenting the problem, my advice is just move house or just learn to ignore them. You're dealing with people who don't give a flying fück about you or the Law, and who won't get stressed about any problems you cause them. They simply self-medicate, and will start to treat you as a problem to be solved, and it will become a war of attrition that you will lose, because you'll get more and more fixated and stressed, and they won't.
Grateful for your replies
I just don't think that (thankfully) I'm dealing the same class of scum as you have witnessed
They couldn't fight their way out of a paper bag, nevermind the below
In the time I've spent photographing them, I've seen them chase away the police a number of times (6 armed officers ran away from them on one occasion) and also several raids by the military (the armed soldiers ran away from them too).