"Wealth inequality, while high, is still roughly where it was in 2007"
This is not whats represented in the source you cited?
In the graph titled "Top 10% and Bottom 50% Wealth Shares in The UK 1900-2020" you can clearly see the wealth owned by the top 10% increased from 54.4% in 2007 to 57% in 2020 and likely even higher now 5 years later.
Yes, that's only a 2.6% increase. I don't think it's unfair to call that "roughly where it was".
In fact, according to that chart wealth inequality today is much lower than it was in the 1970s, although it increased throughout the 1990s.
The same link shows that the UK has unremarkable wealth inequality by the standards of developed countries: we're bang in the middle of the OECD, with lower levels of wealth inequality than Sweden, Denmark, Finland or Norway. (That's funny, I thought the Nordics were egalitarian utopias?)
I'm not saying that wealth inequality is low, or that it's not a problem. I'm merely responding to the claim that "wealth inequality is through the roof", which I take to mean that wealth inequality has increased substantially in recent years. As far as I can tell that's not true.
Personally I think we need more economic growth, not more taxes. We already have the highest taxes since WWII, soon to be the highest taxes in the entire history of the UK, and all it's doing is strangling the economy and making productive people flee.