She will report to the production company's new managing director, Jonathan Davies. Fox's appointment is the first senior hiring Davies has made since he joined the company in January from his previous position as the head of production at Leo Burnett Chicago.
Fox began her career at the Sharps Agency in London before moving to Deutsch in the US, where she worked with Donny Deutsch on Bill Clinton's presidential election campaign. She has also held freelance production positions at Margeotes Fertitta & Partners, Wieden & Kennedy and StrawberryFrog.
She joins @radical.media after a stint as a freelance consultant for the fashion industry.