2. David and Simon Reuben

• Net Worth: $10.5 B                                                                 
• Source of Wealth: Investments
• Citizen: United Kingdom
• Age: 70, 64

Brothers were raised in the U.K. Simon started out importing carpets and buying real estate; David in metals trading. They later joined together in Transworld, a metals trader that invested in Russia and Kazakhstan in the 1990s. Born into a Jewish family, Reuben brothers occupy the second spot in our top ten richest men of UK.  Both brothers are self-made billionaires. They were born in India to Jewish-Iraqi parents and later brought to London by their parents. While David started his business with scrap metals, Simon started with carpets and went on to purchase one of the oldest carpet companies in England. Later on both diversified into different business and merged to become second richest men.