Note: Lucy Benjamin at the BAFTA’s // Pam St. Clement 2016 //
The character of Samantha and her casting was announced on 27 March 2014. It was announced she would joining in a guest stint and her first scenes would air in July. It was revealed that Samantha will end up in hospital after being injured while trying to help rescue a competitive father, who has a heart attack after a running race with his son and the character will also be a new love interest for paramedic Jeff, who treats her at the scene. The BBC said that as the romance with Jeff blossoms, a secret held by Samantha threatens to turn both of their worlds upside down.
Speaking about the part, Collins said: "I got offered the guest role in Casualty very soon after finishing Corrie. I jumped at the chance of playing a character so different so quickly - it was exciting to be stepping into something new. Playing Stella was great fun but it was thrilling to have a challenge of an entirely different role. Londoner Samantha is nothing like Stella - I dyed my hair to leave Stella behind which fitted in well with the role. I'm pleased to be involved in another hit drama TV show so soon, even if it's just for a short while. Since leaving Corrie it's been great to get my teeth into different characters and I'm looking forward to new opportunities which have been coming my way." Casualty's executive producer Oliver Kent added: "We can't wait for everyone to meet Samantha and see where her story goes over the two months she's on screen. Michelle has been absolutely brilliant and her arrival is set to have a huge impact on one of the show's most loved characters."
Valentine "Val" Kildare played by former EastEnders star, Gary Lucy, appeared in the tenth episode of series 29, which was originally broadcast on 15 November 2014. The episode was the first of three standalone episodes the show aired during the twenty-ninth series.
The casting was announced on 2 July 2014 that former EastEnders and Hollyoaks star, Gary Lucy, would be appearing in one of three upcoming standalone episodes that would air in November. Radio Times described the character as "a loveable rogue, born charmer and conman who exists very much on the wrong side of the tracks" and revealed that the episode, featuring Lucy, would revolve around a murder mystery. The show's series producer, Erika Hossington, announced that established character Lily Chao (Crystal Yu) would be the main character in the first standalone episode and that the episode would air on 1 November 2014, written by Jeff Povey. Hossington continued to talk about the episode's setting, "It's a great episode and it's all set at night. The hospital is empty, so it feels like a very ghostly place and that really feeds into the story that we're telling. It's brilliant and it feels very different." The character was not announced until the episode's cast list was revealed.
Yu revealed that herself and Amanda Henderson (who plays Robyn Miller) were very "giggly" whilst filming with Lucy, but she described him as a "wonderful" actor. Lucy also commented on his casting, stating: "I’m so pleased to be part of this fantastic stand-alone episode of Casualty. It’s a well-written and directed piece with a strong set of regular characters. I had huge fun playing a different character in the longest running hospital drama. Tune in to watch the mystery unfold!" Spoiler pictures were released on 13 November that showed Lucy's scenes as Val. It was revealed that Val would be suspected of murder by Lily.
Glen Thomas, played by Owain Arthur, made his first appearance during the thirtieth series on 4 June 2016. Glen was introduced as a love interest for nurse Robyn Miller (Amanda Henderson). They meet at a bereavement support group, where Glen claims his wife died of a brain tumour. However, Glen later reveals that he has a glioblastoma, a malignant brain tumour, and did not want Robyn to date him out of pity. But she wants to be with him and they continue their relationship. Producers worked with the Brain Tumour Charity on the storyline.
Professor Henry Williams played by Tom Chadbon, first appeared on 13 September 2008, at the beginning of series 23. Henry is the hospital's Director of Critical Care and a consultant anaesthetist, who is in charge of the hospital's Emergency Department.
He appointed Adam, though was quite sceptical about his ability to perform as the department's leader. Adam eventually stepped down as Lead Consultant & Clinical Lead in A&E as an Emergency Medicine Doctor and Physician.
Amira Zafar, played by Poppy Jhakra, appeared on 27 August 2016. Amira appeared as a "tricky" agency nurse in the first episode of series 31, which celebrated the show's thirtieth anniversary. Jhakra revealed on 5 October 2016 that she had returned to filming for the show and would appear in episode 23 of series 31. She revealed two days later that she had finished filming. Despite Jhakra's statement, Amira appeared in episode 22, "You Are Your Only Limit". Jhakra revealed on 21 June 2017 that she would appear as Amira in Casualty's spin-off series, Holby City.
Amira arrives for an agency shift, and is rude to Charlie Fairhead (Derek Thompson), infuriating him. Max Walker (Jamie Davis) attempts to flirt with Amira, but she rejects him. When she attempts to apologise to Charlie, Amira is asked to leave the ED, but as she leaves, a helicopter crashes in the department's entrance. She treats Kai Swift (Raif Clark), despite the department being closed to all patients. Kai confesses to responsibility for the crash and Amira encourages him to confess. She leaves at the end of the shift, having impressed Charlie with her devotion to her work. Amira later appears at the disciplinary hearing of consultant Elle Gardner (Jaye Griffiths) to provide a statement about the care of Grace Beauchamp (Emily Carey) on the day she worked in the ED.