Does it, though? I can tell you that the contrast in, say, The Netherlands is a lot smaller.
Take a look at Bilthoven [0], one of the the most extreme examples I know of. The (roughly) north side is obviously richer, but the contrast is an awful lot smaller than the examples from the BBC.
Now let's look at a somewhat average city, Utrecht. [1] Can you tell me which parts the ultra-rich live? How about now? [2] Amsterdam is pretty much the same story, just like Rotterdam, Den Haag, etc. Sure, there are of course rich and poor people, but there are no slums, let alone slums right next to mansions!
About the message: poor people are living in small, filthy, dilapidated houses right next to the immaculate mansions of the rich. Perhaps the rich could contribute a little towards the living conditions of the poor who helped them to gain their wealth?
[0]: https://www.google.nl/maps/@52.1278844,5.1932405,3071m/data=...
[1]: https://www.google.nl/maps/@52.0981346,5.1310086,3074m/data=...
[2]: https://www.google.nl/maps/@52.0999022,5.1106661,2583m/data=...