Cox was born to a British father and an Irish mother in Vienna. Her parents later divorced. Both of them are pianists, who originally came to Vienna on a grant for musicians. Cox grew up in Vienna and graduated from high school in 2003. She developed an interest in acting after performing in a play as part of her English classes during her final year in high school. After her graduation she went on to study acting at the Max Reinhardt Seminar. In 2008 she was under contract as a stage actor at the Theater in der Josefstadt in Vienna. In 2011 Cox moved to Berlin and since then she has appeared in various movies and series on German and Austrian TV, among them several Tatort movies. Since 2015 she plays the role of the viking woman Brida in the TV series The Last Kingdom, which made her known to international audiences.
2025
as Mercia
2024
as Katharina Diemel
2024
as Sara Schiller
2023
as Julia Brandt
2023
as Emma Turgut
2023
as Clara Andersen
2023
as Alma Mahler
2023
as Lisa Sobiri
2023
as Brida
2022
as Jana Skoff
2021
as Katharina
2021
as Tascha
2020
2019
as Meta Jurkschat
2019
as Lilly
2018
as Nursing Home Manager
2018
as Ella
2018
as Therapist
2018
as Miriam
2018
2017
as Self
2015
as Magdalena
2015
as Brida
2015
as Self
2015
as Ulrike Gronau
2014
as Martha Müller
2014
as Frieda Borck (Folge 1)
2014
as Nanna
2013
as Manuela
2013
as Sonja Omminger
2013
as Mel
2012
as Agnes, junge Frau in Auschwitz
2012
as Caroline Mathilde
2011
as Milena 'Milli' Neubert
2011
as Laura
2011
as Mizzi
2011
as Kellnerin
2010
as Anita
2010
as Jakobs Tochter Mascha
2010
as Maja Hönow
2009
as Lucie Thieme
2009
as Gretchen Dutschke-Klotz
2009
as Diana Weininger
2005
as Judith Stoll
2003
as Jeanette Wilson
2001
as Gina Prinz
2001
as Hannah Falck
1981
as Edith Egger
1971
as Heike
1970
as Miranda Kador
1970
as Roswita Mader
1970
as Sybille Wildering
as Deirdre Lawless