Owning a home, having significant savings, holidays abroad at least once a year, sending your children to private school, etc are probably some things I'd consider markers of being in the lower middle class.
On that basis, homes are becoming harder to own, savings are being eaten up by higher cost of living, the pound is weakening and taxes are making it untenable to send your children to private school.
Maybe my idea of what being middle class is is wrong, but it can't be far off, and that's exactly the group of people who aren't going to go much further beyond that to whatever comes at the next stage, I don't know what living standards look like for people above that; multiple properties, significant portfolios, not working for a living?
If my perspective if off, I'm willing to hear it.