Sheikh Hamad bin Jassim Al Thani
Investment, Property
Rank 2017
Al Thani, 57, a strong Anglophile, urged Britain not to leave the EU. The Sandhurst-educated former Qatari prime minister and foreign minister heads his country's Qatar Investment Authority, overseeing billions of dollars of the emirate's cash. He is the main backer for One Hyde Park, the Candy brothers' luxury development, and in 2014 the London-based sheikh launched a £924m agreed takeover for Tony Buckingham's (qv) Heritage Oil operation.