London is the favoured home of many of the international super-wealthy, helping make it such a glittering capital. Long may this remain so.

The Sunak tax affair, coupled with sanctions on Russian oligarchs who could otherwise still be enjoying their “Londongrad” lifestyles, raises questions over the longevity of the non-domiciled resident tax regime.

The facts over the position of our chancellor Rishi Sunak are well documented.

His wife, Akshata Murty, the...