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Los Angeles-based production company Believe Media has announced the arrival of Mark O’Sullivan as the company’s newest West Coast executive producer. O’Sullivan is no stranger to the Believe Media family having set up the company’s London office in 2000. Through his career he has worked with some of the industry’s top directors including Zack Snyder and Floria Sigismondi. Before moving to LA, O’Sullivan worked with some of London’s top production companies, and whilst at Hungry Eye Films found himself producing Ringan Ledwige’s first-ever spot.

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