Promotion

The series was promoted through multiple trailers and each episode received a preview clip before broadcast.^[7] A trailer was released on 15 July 2021 to promote Richard Winsor's return as Caleb Knight as part of the opening episode.^[1] On 2 August 2021, another trailer was released previewing the opening episode. Rhys Freeman from Planet Radio dubbed it "dramatic".^[8] A further trailer teasing more storylines during the series was released on 8 August 2021. The Metro's Duncan Lindsay thought the trailer was "explosive" and opined, "Relentless as ever, never take your eyes off Casualty!"^[9]

Filming

The production protocols introduced at the beginning of production of the previous series were continued into series 36. These protocols ensured the safety of those working on the serial and included adhering to the physical distancing measures enforced by the British government. The measures require cast and crew to maintain a two-metre distance at all times.^[5] Preece told Sophie Dainty of Digital Spy that this was challenging as the show works on "close contact medicine, stunts and emotional exchanges", which was hard to film while adhering to physical distancing measures.^[10] To maintain distancing in scenes with multiple characters, plate shots were filmed. Each shot includes different actors, stood distanced, and in post-production, the shots were edited together to make it appear like one shot.^[11] Green screens were also used to make actors appear closer together than they were allowed to be. Producer Mat McHale confirmed that the difference would not be noticeable on-screen.^[11] Preece reiterated this and promised that the show had not "compromised" on its quality as a result of changes to filming.^[10]

During production, producers faced a challenge of face masks, which are compulsory in hospitals. Preece believed that after much exploration, these masks limited the emotion of scenes, so they were not worn all the time.^[11] Since the drama is set in a hospital, characters used personal protective equipment (PPE) as part of their costume. To avoid using NHS resources, Casualty sourced their PPE from an alternative supplier and despite this, it maintains effectiveness, allowing them to occasionally breach the physical distancing measures.^[12] Due to the protocols enforced, cast were required to apply their own makeup with verbal support from the makeup artists. The show regularly uses makeup-created injuries, such as cuts and bruises, but this was stopped due to the new protection measures.^[12] Additionally, to film kissing scenes, the show hired the partners of the actors to be body doubles.^[12] Due to their integral nature within the show's format, the use of stunts were not stopped; instead, additional work went to making the stunts safe to film.^[12][10] Oates and Preece agreed that often, stunts were easier to arrange than swapping props, due to the time and money involved in them.^[12][10]

Writing

In September 2021, the serial, in collaboration with BBC Writersroom, launched a writing scheme asking frontline medical workers to create part of a script focusing on a consultant's "day from hell in the ED".^[13] Show bosses developed the scheme as part of a new innovative to maintain the accuracy of the show's storylines. Applications opened on 6 September and close on 20 October.^[13] Sathe expressed her excitement at the scheme and thought it gave medics the opportunity to see the television industry after Casualty has spent years inspiring viewers to join the medical industry.^[13] Jessica Loveland, the head of new writing at BBC Writersroom, expressed her delight at working with the drama and hoped to build on the "tradition of medical professionals translating their skills and understanding of human psychology into creative writing and storytelling".^[13]

Three medics-turned-writers were selected from the entries as winners of the competition: Samantha Bacchus, and writing duo Laura Griffiths and Chris Griffiths. Their win was announced on 14 April 2022.^[14] The writers join the show's shadow script team and will work on the special episode as well as developing future stories.^[14] Bacchus worked as a nurse on the front line of the NHS for over 15 years before becoming a full time novelist. She credits the drama with inspiring to enter nursing. Laura Griffiths has over 33 years experience in the NHS, while Chris Griffiths has experience as a paramedic and within trauma teams.^[14] Sarah Beeson, the show's script producer, praised the trio for their "authentic creative ambition and clear passion for Casualty".^[14] Bacchus, Griffiths and Griffiths all expressed their joy at working with the show's writing team on an episode.^[14]

Storyline development

Casualty celebrates thirty-five years since its first episode on 6 September 2021 and producers marked the milestone with a feature-length opening episode.^[2] The episode is set a month after the conclusion of the previous series; the aftermath of the deaths of Fenisha Khatri (Olivia D'Lima) and Lev Malinovsky (Uriel Emil) is the focus point in the first half of the episode.^[15] The episode also contains scenes set in 2016, exploring a day in the ED which has dramatic consequences for the characters.^[2][16] For the episode, three former cast members - Richard Winsor, Tony Marshall (Noel Garcia) and Charles Dale (Big Mac) - reprised their roles as they were in the cast at the time. Preece expressed her excitement about the anniversary celebrations and described it as a "smorgasbord to offer both new and old fans of Casualty".^[2]

A press release for the series confirmed that Ethan Hardy (George Rainsford) and Jacob Masters (Charles Venn) would feature in stories which Preece dubbed "huge [and] heart-breaking".^[2] Rainsford said that filming this series was his "busiest time on the show" and teased "some big, juicy episodes".^[17] Ethan's story begins in the opening episode, following the death of Fenisha, who was his fiancée.^[15] It continues the exploration of his Huntington's disease diagnosis and how he copes as a newly-single father.^[18] Jacob's story is long-running and explores the topic of coercive control as he is abused by his partner, Tina Mollett (Adele James). The plot was heavily researched by production staff and the cast. Venn wanted to highlight the issue and that it is not "gender-specific".^[19] He praised the show for "tackling such a deeply-rooted issue" through his character, who he did not deem "aesthetically" vulnerable.^[19]

The death of Lev in the previous series also generated a new story for his estranged wife, Faith Cadogan (Kirsty Mitchell), who works to support their three young children.^[15] Jade Lovall's (Gabriella Leon) backstory is also explored, beginning with her reasoning for joining nursing in the opening episode.^[18] Writers created a new story for Jan Jenning (Di Botcher) and her wife, Ffion Morgan (Stirling Gallacher), as part of the series. On the story, Preece commented, "Their marriage is certainly pushed to its limits."^[18] In July 2021, Preece confirmed that the series would feature a two-part Christmas special, written by Barbara Machin, who she called "one of television's most prestigious writers".^[2]