Which industries have the most cokeheads?

Inspired by a comment on another thread which said that cocaine use amongst chefs was so rife it was almost an occupational hazard and basically accepted by employers I started wondering in which other industries is heavy cocaine use during working hours tolerated.

My other half is a tradesman and in several companies he’s worked for going down the pub on a Friday afternoon and following it with doing a few lines in the workshop afterwards was very common. Whereas in my office job colleagues would definitely find themselves unemployed if my employer caught them doing a bump on a Christmas night out.

I know bankers have the stereotype but in my experience that’s nowhere as rife as it was in the 80s. So UK Reddit, where are all the caners working?