Rose studied at the Central School of Speech and Drama.She grew up at Royal Military Academy Sandhurst.She is the daughter of Sir John Keegan, the military historian and commentator.Her mother is the biographer Susanne Keegan.Theatre includes: Alan Ayckbourn's The Revengers Comedies. A Message for the Broken Hearted by Gregory Motton, directed by Ramin Gray at The Liverpool Playhouse, Cunigonde in Candide, directed by David Farr at The Gate Theatre. Bedroom Farce, directed by Loveday Ingram at The Aldwych Theatre. The Ghost Is Here, directed by Kazuoshi Kushida, New National Theatre, Tokyo. Hushabye Mountain by Jonathan Harvey directed by Paul Miller at The Hampstead Theatre.She was picked by Kazuoshi Kushida to join his company at The New National Theatre in Tokyo and perform and sing in Japanese.She plays Transom in 'Thunderbirds'.