Hello all! I'd like to thank all of you who helped me during my struggles!
To cut a very long story short: I managed to get Naltrexone on prescription and it worked really well for me. And I had EMDR for my PTSD and ... haven't craved booze ever since. I've believed the theory that there is always a trauma ( big, small, recent, from childhood etc) as a root of any addiction (literally any- OCD, booze, fags, food etc.) So if anyone is still really struggling- look into getting EMDR. I swear by it!
Good luck and warm wishes.