A former Deutsche Bank trader convicted of wire fraud in the U.S. is suing the bank for £12 million ($16.2 million) for training him to break the rules. James Vorley, who worked in DB’s London office, claims senior managers at the bank instructed him to use a trading strategy that resulted in his prosecution.

The bank denies that it taught or instructed staff to use illegal market manipulation methods. In a statement emailed to The Private Banker International on May 6, it said, “We reject the claim and are defending ourselves against it. The bank had, and still has, a very clear market conduct policy which was made clear to employees at the time, and which warned that market manipulation is illegal as well as against bank policy.” 

Ruth Prickett graduated from Cambridge University with a BA hons in History and has specialized in business and finance journalism for the past 20 years. She was editor of Financial Management, the magazine...