Kirby's first major role was as
Elizabeth Bennet in
Pride and Prejudice at
Regent's Park Open Air Theatre in London, for which she was nominated for Outstanding Newcomer at the 2013
Evening Standard Theatre Awards Her other stage work includes leading roles in
Teddy at
Southwark Playhouse and
The Recruiting Officer at the
Salisbury Playhouse. She received a Commendation at the
Ian Charleson Awards for her 2014 role as
Lady Percy in
Henry IV, Parts 1 and 2 at the
Royal Shakespeare Company, She made her television debut in an episode of the long-running
BBC One medical drama
Holby City in 2015, before being cast as ex-Army nurse Valerie Dyer in series six of
Call the Midwife, debuting in 2017. In 2021, she appeared as Dr. Gillian Nicholls in episode 3 of season 8 of the detective drama series
Endeavour. In summer 2023 Kirby will perform in Kimber Lee's
untitled f*ck m*ss s**gon play, at the
Royal Exchange, Manchester and
Young Vic in London. ==References==