The UK’s tax authority is assigning dedicated “customer compliance managers” to more than 200 billionaires as part of a crackdown meant to raise £500m for the public purse.

HM Revenue and Customs (HMRC) said it had for the first time compiled a list of billionaires who are required to pay tax in the UK, regardless of whether they formally live in the country, to tackle a “wealthy tax gap” caused by those who do not pay what they ought.