A fraudulent foreign exchange trader has pleaded guilty to 19 fraud offences at Southwark Crown Court, following a £20.5 million international investment scam.  Joseph Lewis, who was based in Turkey, had told clients that he was investing their funds in foreign exchange trading and sent them monthly reports showing that their investments were performing well.  Instead, investors' funds were paid into Lewis's personal accounts.  Lewis emailed his clients to tell them that he had not been trading with their investments since 2009 and then turned himself in to a local police station.