Like I said "living rough" i.e. the stereotypical homeless person is basically not a real thing in the UK. They do it because they either choose to do so or have other mental or social problems that prevent them from seeking free help.
I don't know what fantasy world you're living in, but in London homelessness is very real and very present. Go take a walk through the city at night, it's eye-opening.
I've noticed it has become considerably worse (by number of homeless) over the past year or so.
That is unsubstantiated opinion (to put it mildly), and does not even address the main point that these examples are intended to show: inequality is growing, and that this causes problems, or that the statement "living standards are better" is not true for many people.
While your statements might resonate with a certain mean-spirited kind of person, they don't even make logical sense - Do you really think that food bank use is increasing because "certain social classes" have found them all of a sudden? Why now? What other forces might be at play at this time that caused it to happen now not 10 years ago? Are there gourmet buffets on offer that weren't there before perhaps?