If you're interested in the shape & extent of inequality in the UK, then you'll be wanting to spend some time examining the conclusions of the Deaton Review on Inequality that has recently concluded six years research.
I'm not going to try to summarise their conclusions but note, as they point out: 'inequalities are themselves a sign that something is not working well in the way that markets are functioning'!
The UK's economic system is dysfunctional!
#inequality
https://ifs.org.uk/articles/evidence-action-what-six-years-research-tells-us-about-challenging-inequalities