When I drive along sometimes I see fly tipping. It makes me really mad when I see roof tiles or felt (or anything) that has been dumped in a lay by just to save a few quid.
When I do a job, I price in my travel to the tip and make sure I pay what is due for the rubbish to be dealt with properly.
When you get a quote for a flat roof make sure you use someone who disposes of the rubbish properly. There’s nothing worse than a cowboy operator undercharging because he doesn’t do ALL the work necessary to be a proper trader.