World rankings (last year's position in brackets)
Sir Nicholas Serota, Tate director 3 (4)
Charles Saatchi, collector 7 (19)
Matthew Slotover and Amanda Sharp, Frieze Art Fair founders 8 (33)
Damien Hirst, artist 11 (1)
Jay Jopling, White Cube owner 19 (31)
Victoria Miro, gallery owner 26 (50)
Sadie Coles, dealer and owner of Sadie Coles HQ 35 (48)
Nicholas Logsdail, owner of the Lisson Gallery 41 (re-entry)
Iwona Blazwick, director of the Whitechapel Gallery 43 (67)
Tracey Emin, artist 51 (re-entry)