The Guardian has the article Should the rich be taxed more? A new paper shows unequivocally yes.

Measuring tax paid against share of income earned and wealth owned reveals the US tax system has become less progressive – and in Britain it is a similar picture

I have said for a long time that the factoid “The top 1% of earners in the UK accounts for 27% of income tax receipts” is meaningless. Tell me what percentage of the income the 1% earn before we judge the fairness of paying 27% of the tax.

Finally, this article alludes to that number even if it doesn’t present it in a simple fashion.