Kathryn is the older (by six minutes) of the acting Prescott twins; she and her sister Megan have portrayed identical twins in an episode of the soap opera "Doctors," as well as the original British version of the controversial teen drama "Skins." In the "second generation" of "Skins," Kathryn portrays Emily Fitch, a character struggling with her sexuality who eventually comes out as a lesbian. Her on-screen love interest was played by Lily Loveless, with whom she attended a summer session at Mountview Academy of Theatre Arts. In her personal life, Prescott has avoided categorizing her sexual preference, stating that she does not think "people are defined by their sexuality."