One of Europe’s best-known private equity executives has won an appeal in the UK’s Supreme Court to stop the income he made while working at a US investor from being taxed twice.

George Anson, a managing director in the London office of US investor HarbourVest Partners, said in his legal case that he was effectively being asked to pay a tax rate of 67% on his income between 1997 to 2004 while working at the firm. Anson, who is resident in the UK, paid taxes in the US on his share of HarbourVest's profits at a rate of 45% which was then remitted to the UK, where those profits were then taxed again at a rate of 40% by the UK authorities.