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Lev Leviev
Diamonds, Property
Rank 2017
135
Worth
£986m
Rise/fall
£211m

Leviev, 60, known as "the King of Diamonds", won a court battle last year that obliged a former business partner to pay him between $100m and $200m. The Uzbekistan-born gem trader moved from Israel and now lives in London. His Leviev Group controls companies including diamond mines in Angola, Namibia and Russia and boutiques in New York, London, Dubai and Singapore. We raise the father of nine to £986m.