Taxation seems to be optional for many people in the top 1%, where most of the money lies. In the words of Leona Helmsley, the American who went to jail for tax evasion, "only the little people pay taxes". In fact, for some it seems to be a matter of pride to refuse to pay tax.
For example if you have a big hedge fund, you manipulate the funds offshore in the Caymans or whatever, and only the money you need to pay for the UK overheads enters the country, so that's the only bit you pay taxes on. The rest is tax free even though you are probably using UK graduates with education paid for by the state, UK administrators on tax credits or whatever, also paid for by the state, and so on. It's a great big wheeze.
Then you can choose to make donations to worthy causes you like the look of to assuages you conscience, and build your status within society, without having to pay for annoying things like public healthcare systems, schooling and universities. And the best thing of all is that these donations can be a fraction of what you might have paid in tax, and you'll get a whopping great gong for doing it. And at dinner parties you can pontificate about the poor being essentially feckless and not entrepreneurial enough to survive in a meritocratic society.
Don't get me wrong, I have a good accountant myself, maximise my legitimate allowances and so on, but at the end of the day I would feel awkward to cheat the people around me of any kind of contribution to the social pot, purely in the name of playing some kind of status game. It's wrong. And I would like to see the pendulum swing towards people having a bit more of a conscience and paying tax becoming the decent things to do once again.