Three decades ago Islamic banking does not exist and banking without interest was confined to theoretical ideas on paper. The world, including the majority of Muslims, was sceptical that Islamic banking was feasible. The proponents of Islamic banking then had a tough time answering criticisms from the opponents. Now Islamic banking has become a reality and big conventional banks e.g. HSBC and Lloyds TSB sell Islamic banking products alongside their conventional products. The voice of criticism is no longer heard.