This is much harder to evade - if you own most of Mayfair, you can't just move your assets elsewhere - they are very clearly tied to the location.
Of course, this would mean taxing powerful aristocrats, including the royal family. With their large majority, the British government had the opportunity to do this, but decided to take an easier path. The reason why this path was easier is now becoming clear to them.
Then there are the semi-elective things like healthcare, education, home security. These kinda dont work for the whole society. The rich are thus paying for their own out of pocket. But they are also paying for the semi-working system for everyone else.
I think introducing a wealth tax just to balance the books without rethinking who and how accesses public funds, will just end with the rich leaving. Some may say good riddance, but the UK budget is now beyond creaking and heading for collapse.
Oh and when I say "the rich", that probably covers many people here. IIRC earning 90k per year puts you in the top 1%. A 10-15 year experience NHS doctor is in that bracket.
According to the public data for 2023-2024, top 1% is around £180-200k, so you're off by quite a bit. £90k is around 5-6%. This is gross, not net.
In the U.S., the top 1% is around $570-600k according to 2024 census numbers.
In the mind of probably at least 75% electorate, the top 5% are filthy rich who should make up any tax shortfall. But also 90k puts you, I believe, out of reach of all the services I listed above.
I'm all for paying tax, and even more tax if need be, where I get equal access to services. But not when I'm literally excluded for paying more tax.
Interestingly, according to an FT article, high earners in the UK pay comparable amounts of tax as they would on the "high tax" continent. It is the low earners who oay substantially less, bringing down the effective average. But they in turn pay outsized housing rent, so arent better off either.