A British bank hit with a $2.46 billion judgment is getting a new trial in a lawsuit accusing its Illinois-based consumer finance unit of committing securities fraud.The 7th U.S. Circuit Court of Appeals rejected several of the challenges raised by HSBC Holdings PLC and three former executives of Household International Inc.But the court held HSBC and the executives are entitled to a new trial on two issues raised in the securities fraud suit filed by disgruntled investors.One issue is whether the revelation that Household …