Yeah in the UK benzos are basically a street/junkie drug now. They were big in the rave scene back in the late 80s to the mid 90s or so but that all changed (for most people - maybe some of the old heads still use them and it is them who told me about this stuff as it was before my time. Old skool ravers here are in their 60s in some cases) and are now generally sold within the same market as heroin and crack, on the streets at least. The only guy I know who used benzos for comedowns was German and was into the whole scene in Berlin, Berghein and all that. My old plug DJd at the panorama bar there too but even he saw benzos as dirty drugs, despite moving ketamine, MDMA, mephedrone and other stuff. "Valium" nowadays is synonymous with smack heads and temazepam which the OP was talking about barely exists now so the threat regarding xylazine is a threat mostly to street users and some unfortunate people who buy a bad batch of something online.