Trader333 is right.
Employees have to pay around 11% National Insurance, in addition to the normal Income tax.
VAT is a form of point-of-sale tax, although perhaps fairer.
If tax gets too much, all that will happen is that accountants will become more cleverer as to how income is classed, (as company dividends, etc), or businesses become not worth running.
(skimmed a few articles about mid-70s a while ago, where some top-flight employees were paid in gold coins to avoid tax.) 🙂