Holly Jackson Walters

 voiced several characters for Big Finish Productions.

The Eighth Doctor Adventures

 * The Love Vampires - Fifteen / Jean

The Twelfth Doctor Chronicles

 * Split Second - Havilland
 * The Weight of History - Havilland

The Diary of River Song

 * Terror of the Suburbs - Yvonne / Herta

The Robots

 * A Matter of Conscience - Shala

Lady Christina

 * It Takes a Thief - Carla / Maude Hunter