6) Hinduja Brothers (Net Worth: $13.3 Billion)

London based Indian billionaire brothers Srichand and Gopichand run a multinational company with diverse business from banking and healthcare to trucks. Their fortune is up by 50%, thanks to a rebound in the auto sector that boosted shares of their Indian truck-maker, Ashok Leyland.

The brothers are planning to invest as much as $10 billion in reviving stalled infrastructure and power projects in Indai, thanks to the new business-friendly the government have put in place.