Katie Bell joins Mad Cow

London-based production company Mad Cow Films has announced the signing of director Katie Bell to its roster of talent. Bell starter her career at MTV where she quickly progressed into helming music promos for artists including the Bee Gees, Boyzone, BBMac and Girls Aloud. Bell has also shot commercials for brands including KLM, Dove, Ribena, Scholl, Kraft, Walmart, Muller, B&Q and Pampers.