Interesting. For me this is one of the worst things about living in the UK.
It’s quite normal for many people to go the park or the beach and just leave all their litter on the ground when they’re done. Or to tip out all the litter from their car into the street when they’re done eating a McDonalds meal. Things that would be totally unacceptable in Japan or even many other European countries!
In the UK I don’t think it’s lack of respect for others that is the real problem, however. People are generally polite to each other, willing to help people out and form orderly queues. It’s more a lack of respect for the environment around them (picking up litter is someone else’s job) or lack of awareness of how their actions affect others (I had no idea that revving my loud ass motorbike on a residential street at 1AM was annoying people)...
Sometimes I wish that the UK was more like Japan!