This series featured the departures of six cast members, including Amanda Mealing as Connie Beauchamp, Azuka Oforka as Louise Tyler and Chelsea Halfpenny as Alicia Munroe.
[2] Kate Oates became the show's senior executive producer from October 2018,[3] and was promoted to Head of Continuing Drama six months later.
"[7] It was previously revealed, in May 2018, that the show was filming scenes which would feature a motorway crash and a petrol tanker turning on its side.
[8] Sophie Dainty of entertainment website Digital Spy reported that there would be an explosion, which would leave one main character's life "hanging in the balance".
On the atmosphere on-set while filming, she commented, "there's a certain buzz in the air..."[9] The episode sees Sam die after suffering a fatal bleed from the crash, which sparks a new story for Iain as he struggles to cope with his grief.
[14] In August 2018, Raffety told Dainty (Digital Spy) that Harper enjoys the crossover events between the two dramas and wanted to produce more.
[14] In a December 2018 interview with Dainty, Harper promised further crossovers between Holby City and Casualty, and teased an "exciting" event to be aired in spring 2019.
A predominant story in the episodes follows Connie and Holby City character Jac Naylor (Rosie Marcel) saving the lives of colleagues after two separate major incidents, despite only having one available theatre.
[2] Nine Casualty cast members - Mealing (Connie Beauchamp), Durr (David Hide), Stevenson (Iain Dean), Ryan (Gem Dean), Mohan (Rash Masum), Jafargholi (Marty Kirkby), Griffiths (Elle Gardner), Marshall (Noel Garcia), and Hill (Ruby Spark) - feature in the Holby City episode of the crossover, originally broadcast on 5 March 2019.
[17] The Casualty episode of the crossover, episode 26 of this series, features the Casualty cast alongside twelve Holby City cast members - Marcel (Jac Naylor), Bob Barrett (Sacha Levy), Hugh Quarshie (Ric Griffin), Guy Henry (Henrik Hanssen), Catherine Russell (Serena Campbell), Alex Walkinshaw (Adrian "Fletch" Fletcher), Kaye Wragg (Essie Di Lucca), Jaye Jacobs (Donna Jackson), Marcus Griffiths (Xavier "Xav" Duval), Nic Jackman (Cameron Dunn), Camilla Arfwedson (Zosia Self), and Belinda Owusu (Nicky McKendrick) - and two Holby City guest actors - Francesca Barrett as Beka Levy and Naomi Katiyo as Darla Johnstone.
[18] The thirty-third series of Casualty features a cast of characters working in the emergency department of Holby City Hospital.
Charlotte Salt, Michael Stevenson and Maddy Hill portray paramedics Sam Nicholls, Iain Dean, and Ruby Spark respectively.
Additionally, four cast members feature on the series in a recurring capacity: Rebecca Ryan features as porter Gemma Dean; Kai Thorne portrays Blake Gardner; Joe Gaminara appears as F1 doctor Eddie McAllister; and Di Botcher plays operational duty manager and paramedic Jan Jenning.
[31] On 1 August 2018, Sophie Dainty of Digital Spy reported that former EastEnders actor Shaheen Jafargholi had joined the cast as new nurse, Marty Kirkby.
[32] Series producer Lucy Raffety revealed on 15 August 2018 that actress Gabriella Leon would join the show alongside Jafargholi, playing student nurse Jade Lovall.
[36] Raffety announced on 31 May 2019 that Jacey Sallés would join the cast as porter Rosa Cadenas during the series and feature in an "interesting story" with David.
[42][43] In February 2019, it was confirmed that Thomas had reprised the role for another stint exploring Jacob's backstory,[44] and she appears between episode 36 and 41, where the character was killed off.
[45][46] Episode one features the first appearance of Max Parker as Alasdair "Base" Newman, a drug addict who Iain befriends.
[48] The same storyline also sees the reappearance of DC Kate Wilkinson (Amy Noble) in episode 22, a character who has appeared on-off since series 30.
[49] Belinda Stewart-Wilson rejoins the recurring cast as Ciara Cassidy, Dylan's alcoholic friend, in episode 2, following her appearance in the previous series.
[52] Accredited actor Clive Wood makes his first appearance as Duffy's "childhood sweetheart", Bill Crowthers, in episode 3.
[61] Actor Paul Barber joined the recurring cast in episode 13 as Ernest Maxwell, a homeless man involved in a storyline with Louise.
New student nurse Marty Kirkby joins the ED and pleases Louise when he correctly suspects a patient of having meningitis.
Connie tells Dylan that the computer issues were caused by a member of staff opening a spam email, which Noel overhears and worries about.
Ciaran is later called into Connie's office, where Hanssen explains that a staff member has been prescribing three times as many benzodiazepines as other colleagues.
The drama was nominated in the "Best Soap (Evening)" category at the 2018 Digital Spy Reader Awards; it came in last place with 3.8% of the total votes.