With how many houses are HMOs, with several separate people living in them (so less ability to control trash, compared to a family where the heads of the household can dictate the purchases and waste disposal methods of the others. If you're a parent you strictly teach your kids not to waste food and to crush boxes and plastic bottles, and then they do it. Getting people to wash their dishes is hard enough), are fortnightly collections still a good idea. I remember when they were brought in people said it was ridiculous, but then it was only an issue for bigger families.

I'm in a houseshare and right now our bin is full with the lid not fully closed (the council at least officially doesn't collect bins with the lid not fully shut. They also don't collect "side waste"). Neighbours bins look the same. Two 90% full 50L bins inside, both that could do with emptying (itself a headache, since some people here don't use binbags for some reason, despite me leaving a note saying to use them and telling them which cupboard they'd in). And this is with me almost never using our bins, as I throw most of my waste into public bins on the street (which I think you're legally not supposed to do). One wheelie bin for each house it seems.

Nobody here has a car to carry rubbish to the tip. But also that's a ridiculous solution anyway.