I organise local litter picks every now and then, feels like the only sensible/practical response in Britain anyway.
You rapidly form opinions about litterers though, for instance I now judge smokers a lot more harshly as it seems to just be socially acceptable chuck butts away, there’s drifts of them everywhere and you just have to ignore them when you’re litter picking otherwise you’d never get anywhere. Lots of fag packets chucked on the ground too.
Energy drinks are the next worst culprit, loads of Monster and Red Bull cans.
McDonalds wrappers obviously.
Finally (and maybe it’s just our village, I wonder if it’s actually just one person!) that Red Berry Strongbow stuff, forever picking up empty cans (also Polish Lager, although I choose to believe that’s because it’s cheap, not because Polish people litter more than average).
Most of the above suggests kids to me, so maybe the solution is engaging kids with their countryside more so that they actually give a shit at a younger age. Enforced Duke of Edinburgh anyone? 😉