The "few bad apples spoil it for the rest of us" routine gets tiresome after a while, no?

There's no difference between unlicenced detecting and the barrow-robbing Stukeley saw at Stonehenge, no matter how many good intentions you throw at it. I can only imagine the stuff dug up and stashed away in the last ten years or so, the landscape robbed of vital evidence to explain why it is the way it is. Not to mention those finds reported, only to find enormous damage done in the extraction at the site. No trowels and brushes there...