The FAA (in the USA) is pretty heavy in comparison.
But the punishments seem to fit the crime better.
Why fine someone £6000 for busting airspace? What they should do is to order some retraining with a CAA inspector / examiner and invalidate their licence until it has been completed. If they fly with an invalid licence, then fine them £6000.
This is more like what happens in the USA. Of course they dish out big fines there too, and prison sentences, but not for mistakes.