@onemouseplace
Up and coming turning middle class London neighbourhood. Generally a bit going round at parties, but not in an especially obvious way. A lot of people I know used to indulge at uni/ in their 20s/30s and aren't on it every weekend by any means, but wouldn't say no if some came their way when they were out.
Also this, it can be taken quite discreetly and quickly too.
As a couple PP said, there's also alot of people who do it at home, on an evening, over dinner, drinks etc.
It's not always big parties, people going out etc.
In fact from what I know, it's more likely to be taken by the middle class, dinner, drinks, night out, home afterwards for more drinks & cocaine.
Or open a bottle of wine, or a few, after dinner on the weekend, and do a few lines at home.
In the case of the home takers, why would anyone else ever know.
I've also known of some very intelligent and hard working dealers, in otherwise professional jobs.
Cocaine really does cross the "classes", more so than any other drug - ie. If someone offered a harder drug around, they would be absolutely viewed differently. Cocaine is socially more acceptable, if you move in circles that use.