Hi Sam, glad you posted.
I get what you are saying, I don't have aspergers (and i'm not an alcoholic) but I've done some basic research on aspergers so I get what you are saying about feeling very uncomfortable socializing and how alcohol works for you to overcome that.
The thing is, that's self-medicating and is that ever a good choice when the self-medication is so destructive?
If you are not receiving the help you need maybe you do need to help yourself, but maybe not with alcohol? I've watched some of this guy's videos, he has asp - you might find some points of interest here, he also has a video about help available in the UK vs the US, the different approaches. Perhaps you could even contact him and ask him where he sought help (since he is in the UK)?
Hope this helps a bit and please keep posting, interested to see what help you do find and your posts will no doubt help others.