Kweku Adoboli, the former UBS trader who caused a $2.3 billion loss through unauthorized trading, is trying again to get permission to overturn his conviction and seven-year sentence. Lawyers for Adoboli are scheduled to ask an appeals court in London today to grant him the chance to argue that the conviction should be thrown out. His initial claim was already rejected by a judge in July 2013, without a hearing taking place. Adoboli was convicted in November 2012 of two counts of fraud for causing the loss at the bank’s London unit. He argued at trial that managers at Zurich-based UBS pushed him to take too many risks and that rule-breaking at the bank was rampant. While he admitted causing the loss, he said it wasn’t done dishonestly. [Bloomberg]