I was thinking about this yesterday, and meant to post a thread asking how many of us 'own up' to avoiding tax in some way (I say 'own up' because I'm talking about legal methods, not dodging).
I've come up with two - one I do, and one I might do some day.
If I were to buy a car, I might well consider looking for a pre-1972 project, partly because I like simple old cars and partly because they are exempt from VED.
What I do now, is buy children's shoes. I've got size 5 feet, so I can usually get a child's style trainer or walking boot - child style in this case being exactly the same as adult style. No VAT on children's clothes and shoes.
Ok, the amounts involved are pretty small, but in principle it's just the same.
So, although I would prefer that wealthy people paid more tax, and that everyone stopped assuming that low tax is the best thing for society (look at Scandinavia - high tax, but also high social standards), I can't condemn those clever enough to get round it.