""Inheritance" Tax is the most amoral and unfair tax."
I don't know about that, Motown.
The idea of any tax is to get some money from people who've got it. Those people will always say it's unfair.
The previous owners don't need it any more, and the future owners didn't work for it, so the tax doesn't actually make anyone worse off than they were before inheriting.
Very often it is charged on estates that have had the benefit of house price inflation, so it depends on where and when the previous owners chanced to live, and what has happened to that area.
If we had a wealth tax, so that owners of £2m houses had to pay a bit every year, it would be harder for them, because they might not have the income to cover it.
I do think though that it ought to be graduated, rather than single-step once over the allowance. If the rate was lower, it could be started at a lower rate, and winch upwards in bands, like income tax does.
I don't know what should be done to prevent it capturing mostly the moderately-wealthy, I understand the really-rich can afford wheezes to avoid it. I did hear that loopholes avoiding foreign oligarchs who are billionaires and own UK homes but don't pay UK tax, are being tightened up a bit.