Islamic bond programmes from a trio of big conventional banks are set to expand the boundaries of Islamic finance, helping open the market to first-time issuers while testing the banks' ability to win over industry purists. Since June, France's Societe Generale, Bank of Tokyo-Mitsubishi UFJ (BTMU) and Goldman Sachs have set up sukuk programmes, aiming to tap the pool of cash-rich Islamic investors. An abortive plan by Goldman to issue sukuk in 2011 showed the obstacles which conventional banks can face in the market. But if the three banks are successful and become regular sukuk issuers, they could help to widen Islamic finance beyond its core markets in the Middle East and southeast Asia.