[2][3] She has also starred in theatre, including War Horse at the Royal National Theatre in 2012.
Other plays at the National include: The Silver Tassie, 3 Winters, Husbands and Sons, The Plough and the Stars, and most recently The Ocean at the End of the Lane, for which she was nominated for Best Actress in a supporting role 2020 Olivier Awards.
[6][5] Walker's television work includes: The Bill, EastEnders, Holby, Waterloo Road, Blessed, Psychoville Halloween Special, Call the Midwife, and most recently, Vera (S9:E4, 2019), White House Farm Murders, and This Is Going to Hurt.
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