Britain's financial watchdog has fined Bank of New York Mellon 126 million pounds (or $186 million) for breaking rules meant to protect customer assets.br The Financial Conduct Authority said Wednesday it fined the bank's London branch and Bank of New York Mellon International Limited for failings between 2007 and 2013.br During that time, the bank — the world's largest custody bank — held over 1 trillion pounds' worth of assets from over 6,000 Britain-based customers.