Fewer than 1% of homes in the UK are valued at over £2M and the top rate of £7,500 on homes over £5M will affect around 600 people each year. Absolutely fuck all in the grand scheme of things so this is nothing but white washing by the Guardian when almost all of the new money being brought in in tax is due to continuing to freeze the income tax thresholds and nothing to do with mansion taxes.

https://www.savills.co.uk/insight-and-opinion/savills-news/356043-0/london-s-%C2%A35-million-plus-residential-market-slowed-in-2023--but-sales-still-well-ahead-of-pre-covid-norms