It's actually a Glasgow Interface Explorer. [1]
[1] https://glasgow-embedded.org/latest/intro.html
I lived in Glasgow for >20 years and I never saw anyone as "strung out" as the people I saw wondering around Market St in San Francisco.
>The film follows a group of heroin addicts in an economically depressed area of Edinburgh and their passage through life
It's actually a Glasgow Interface Explorer. [1]
[1] https://glasgow-embedded.org/latest/intro.html