This is going to be an unpopular opinion here but actually, I disagree. I think tax rates in the UK, and in a lot of the western world, are far too high. It's one of the reasons our high streets are all clones now; huge corporations are able to minimise their overheads (including tax) and hence undercut small independent traders.
Even Keynes thought that the maximum rate of tax in peacetime should be no more than 25%. Well, including national insurance contribution (which is another tax despite its name) I am paying 29.7% - and I am not a higher rate tax payer (though I am an accountant!) If I weren't paying into my employer's pension scheme I would be chucking quite a lot more into government coffers.
I wanted to have lunch at my local sandwich shop a few days ago. It was shut, and there was a sign on the door explaining that they'd decided to not to open on Mondays because they were too close to the threshold at which they'd have to charge VAT - and that would make the business uneconomic. And that, in a nutshell, is what too much taxation does to our GDP.
I know everyone thinks about expenditure on the NHS and suchlike - but actually most public services are bloated with bureaucracy (and I have worked in the public sector, including a big general hospital, and observed this firsthand.) There is little or no incentive to cut overheads - in many cases, quite the reverse. Administrators gain status and power by spending more, not less. Taking away the profit motive means that the normal forces driving efficiency gains disappear; trying to replace them with imposed targets (as agreed with those being measured, surreally) leads of course to a tick box culture.
So I am not at all surprised by, or disapproving of, attempts by anyone to mitigate their tax bill. I would myself if I could. But I would much, much, prefer to live in a lower tax economy which took away the incentive for people to avoid tax and instead grew the pot for everyone. A few other countries (no, not the USA, I don't want that either) manage to provide decent and effective welfare cover for their citizens without taxing them through the roof for the privilege, and I think we should make an effort to learn from their example.