Issy Van Randwyck

 voiced several characters for Big Finish Productions.

The Lost Stories

 * The Ultimate Evil - Koreelya

The Third Doctor Adventures

 * The Gulf - Jesko
 * Conspiracy in Space - Grand Widow

The Paternoster Gang

 * Family Matters - Ma Scarrity

The Diary of River Song

 * A Requiem for the Doctor - Giulia
 * Carnival of Angels - Miss Quirk