See it in my street all the time. Cars park along street, eat their chips/MaccyD/Kentucky...and just dump the wrappers at the side of the road. There's plenty of bins....just can't be arssed to walk a few metres.
Fly tipping was becoming endemic here as well, prolific dumping in almost every street. This in my mind is mostly residents, not man in van arriving and dumping a shedload. The local councillor really made a thing of it via FB etc, got loads of folk on side, arranged big skip collection days late last year, just bring it to an alloted point and job done. Several months later......its all starting over again, boxes, furniture, TVs just dumped at the roadside leaving the council....and us as taxpayers.....to pay,
Landlords of high turnover accomodation will doubtless be responsible as well. Clear a flat, chuck it in the street, move the next one in....and save yourself the expense of taking responsibility.