Jemma Redgrave (born 14 January 1965) played Kate Stewart in several Doctor Who stories both on television and on audio for Big Finish Productions. Her character became one of the main leads in the UNIT: The New Series audio anthologies.
She also played a Zygon double of her character in The Day of the Doctor, as well as parallel universe Kate Stewart in the audio story False Negative. Redgrave also voiced Lana Merrion in the audio Mistfall. She is the niece of Vanessa Redgrave.
- The Power of Three
- The Day of the Doctor
- Death in Heaven
- The Magician's Apprentice
- The Zygon Invasion / The Zygon Inversion