I made this earlier, while I was looking at the Office of National Statistics' income/tax/benefit stats. I'm an interesting person like that 
Thought I may as well put it on the thread.
It shows that, although the bottom three tenths of the UK receive more in benefits than they pay out in taxes, the top one-tenth is still left with a disproportionately high income compared to everyone else.
You can see how the richest 10% of households skew our income distribution, because they've pulled the average higher than it ought to be.
If the distribution was more 'fair', at least to the middles, the 'average' line would cross the tops of the 5th and 6th bars - be in the middle.
As it is, it only just meets the top of the 4th decile.
Soaring final income levels at the 1st decile are causing too much inequality.
The answer isn't to reduce the average, but to pull some more of that 1st decile income down into the poorer groups: make the final bar shorter, and the 10th - 5th bars taller.
As we've seen upthread, improved income equality has a highly positive effect on economic growth. (This makes sense: more people buying more stuff means more people trading, so good news all round.)
In reality, the top decile's bar could be pulled down efficiently by taking more taxes and/or awarding fewer benefits to the top 1%. A household income of £80k isn't that high. Lumping the data into deciles hides the fact that a few hundred thousand households have extremely high incomes.
Similarly, a few hundred thousand of the poorest households actually have an income of around zero.