Casualty series 34

The thirty-fourth series of the British medical drama television series Casualty began airing on BBC One in the United Kingdom on 17 August 2019, one week after the end of the previous series. The series consists of 43 episodes. Lucy Raffety continues her role as series producer, while Simon Harper continues his role as the show's executive producer; this is Raffety's final series as producer, and she was replaced by Loretta Preece. Production on the series was postponed in March 2020 due to the COVID-19 pandemic, which also resulted in multiple transmission breaks. A single episode was also pulled due to comparisons between its content and the pandemic; the episode was broadcast as the final episode of the series at a later date. The theme of the series is reflecting how the National Health Service (NHS) is "under pressure", with elements focusing on "the hierarchy of pressure on the doctors". The series is also promoted through multiple trailers.

Sixteen regular cast members reprised their roles from the previous series and five actors joined the cast. Additionally, Neet Mohan reprised his role as Rash Masum in the opening episode and Amanda Mealing returned to her role as Connie Beauchamp in episode 18 after a break from the series. Four cast members departed the show during the series, including original cast member Cathy Shipton (Lisa "Duffy" Duffin). Jane Hazlegrove reprised her role as Kathleen "Dixie" Dixon for two episodes and American actress Sharon Gless appeared as her recurring character, Zsa Zsa Harper-Jenkinson.