Lewis Hamilton refuses to comment on tax avoidance allegations

Lewis Hamilton has refused to comment on criticism of his tax affairs and says he is solely focused on winning Sunday's Brazilian Grand Prix.The British driver, who won his fourth Formula One world championship title in Mexico last month, is alleged to have avoided paying tax on a £16.5m private jet, which he imported into the Isle of Man.Hamilton's lawyers have said the tax structure was reviewed by a barrister and was found to be lawful.