Drug dealing is just free trade frown upon by the government and the "squillionaires" do partake.

I haven't seen much other crime going on, living there for a few years; a friend got his wallet stolen in Angel with 4 digits cash though, albeit I'm not sure whether that was an inside job or normal pick pocketing.

Overall it felt pretty safe, especially when compared to west london (I got jumped with a knife once) or south london (plenty of crime going there).