I'm not talking about excursion trains football specials or even trains on traditional holiday runs (e.g. GWR to Devon and Cornwall). I've seen plenty of trains after regular commuters have travelled in them. It seems that some commuters lose all sense of consideration for others when travelling as if the railway is really only run for their benefit.I am not so sure about this. I read an autobiography by someone who cleaned excursion trains to the seaside at Leicester in the 1950s, I think. He wrote that the state of the trains on their return was truly awful, in some cases quite disgusting.
I also recall appalling amounts of rubbish deposited on the tracks at some London stations in the 1980s.