It is an awful practice. I recently moved to Bucks from London and was perplexed why there is a cost to take certain items, with inherent value to the dump; old radiators, wood…? These inverse incentives probably lead to an increase in fly tipping.

Fly-tipping is indeed a plague, so why not going full medieval and bring pillory back? Any person caught fly-tipping will spend an hour at the pillory per kg of rubbish tipped. The public will be encouraged to throw said rubbish at them. That should discourage the practice.