The CAA don't really give a **** unless people are harmed by bad flying or they take the complete and utter piss like the P2 Adventures guy and if you looked at what happened to him, in relation to the rules he broke, it bodes pretty well for anyone who wants to break the rules.
The irony is, by being a qualified pilot, you're more likely to get in trouble because they have something they can take away from you in seconds.
your permission to fly. no insurance, no jobs from clients looking to use official people, name and rep in tatters. That's leverage.
And a ton of fellow pros who are dying to get you kicked out so they have more chance of making money from jobs you lose.
The only way the CAA can get to you if you're flying badly and for fun (no permissions), is to launch a legal case, this takes ages and costs money.
9/10 its not worth it as most of the time even when people fly badly, they get away without causing damage.
So the incentive to prosecute is minor.
I suspect police will soon have a code to bring down drones and DJI will assist them in implementing this. I see this is where the market is going, and dji will have no problem screwing us over with these things, because we all know DJI have the ethics of the devil.
Then again if you follow the rules you have nothing to worry about, even though most of us push them from time to time.
I just bought a phantom 2 again (as a backup/fun drone) because its an incredibly useful tool and more importantly its very unrestricted and able.