To add to the cocktail of drugs there is also glue sniffing. South of the border you will never see anyone sniffing glue and I doubt there are many people in England who wake up in the morning with a burning desire to sit in the street sniffing glue. But this goes on in Glasgow. I found this shocking to see.
There is also 'Bucky' that alcohol that is not sold south of the border.
https://en.wikipedia.org/wiki/Buckfast_Tonic_Wine
15% alcohol in what is effectively an energy drink. Happy times.