So funny, I was literally just starting a similar thread when I saw this one.
I was in London this week, having lived there when I was younger, and was pretty shocked at the state of things.
The tube is all the worse for not having manned ticket booths. Tourists were wandering round not knowing where to turn to (this is in central London, obviously). There were no announcements that the District line was totally closed while we were on another line, leading to a minor crush as people headed to another line and piled on that one. Other foreigners clearly didn't know where to go at all.
The street was literally filthy, piles of trash everywhere under signs saying "don't leave rubbish here". Just literally filthy.
I saw a man who seemed to be not in a normal mental state grab a whole display of goods and walk out of a Tesco Express, looking menacingly at everyone. Needless to say no-one confronted him because no-one is that stupid to risk their life! Never seen anything like it. When I told the security guard he just laughed, maybe he was in on it, who knows?
Obviously some people were nicely dressed but not to the standards of even a few years ago.
A beggar confronted people in my carriage and looked like he was going to get aggressive when no-one gave him money, this I had never seen before, either. Obviously there were beggars but not so aggressive and Phys confronting people.
Edit: I also had racial abuse of the worst kind said to me by some Americans (of all people) as I was walking along. That had never happened to me before, either, in all my years of living in outer London 😔. They said people like me are an "infestation". It's never happened before.
Overall there was a general decline on display.