Jacqueline Pearce (born 20 December 1943) played Chessene in DW: The Two Doctors. She also voiced Sherilyn Harper in BFA: The Fearmonger, Admiral Mettna in WC: Death Comes to Time, the Keeper in BFSJS: Buried Secrets, Snow Blind and Fatal Consequences, and Zafira in BFA: Hexagora. Outside of Doctor Who, she is perhaps best known for her role as Servalan on Blake's 7.