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Cristina Stenbeck
Media
Rank 2017
273
Worth
£457m
Rise/fall
£57m

New York-born Stenbeck, 39, took the helm of Sweden's Kinnevik media and telecoms group in 2002, stepping down as chairwoman in June 2016. She is married to British businessman Alex Fitzgibbons, whose events management company Fait Accompli organised the Buckingham Palace party after Prince William's wedding. In its 2016 Swedish rich list Veckans Affarer values the London-based Stenbeck at £457m.