I haven't read all of the replies but if a police officer was to pull you over/fine you for riding (just riding not doing any moves or anything). Regardless of the fact the police officers knowledge of the highway code is going to be low to none, correct me if I'm wrong, but you're going to have to have a f**king pretty big knowledge of the highway code to rattle your way out of it. Even then, I can't imagine it going down in court..