“We did have one billionaire client who literally on the day of the budget, 6 March, got on his private jet with his wife, with his children, with the private tutor, and flew to one of his other 17 houses in the world – and said ‘I’m not coming back’,” said John Barnett, a partner at the law firm Burges Salmon, which specialises in advising the super-rich on how to legally reduce their tax bills.
