While it’s true it was upgraded to class B somewhat absurdly and has theoretical significant penalties for use, the reality is police simply don’t really pay attention to individual use and the law is not really enforced to that extent against individual users. You’d have to be staggeringly unlucky to see jail time for simply smoking a joint in the UK, something reflected in the large drop in convictions etc even after the status change.

> https://www.thetimes.co.uk/article/police-going-soft-on-cann...