Chelsea Halfpenny
Halfpenny's professional acting career began in 2004 when she appeared in "Casualty" episode ""What Parents Do"", playing an eleven-year-old girl called Karine.
Dylan Keogh
Actor William Beck joined the cast of "Casualty" as regular character Dylan Keogh during the twenty-fifth series. He was introduced as a replacement for fellow emergency medicine doctor Ruth Winters (Georgia Taylor), who had been sectioned in earlier episodes. Beck felt the role was right for him, as he had previously attended medical school before training as an actor. He commented, "I love all the medical details and jargon I have to learn. I didn't give up medical school because I couldn't do it, I just got bored with things very quickly at that age. I'm still fascinated by the endless variety of diseases and the questions that arise each time." Beck made his first appearance as Dylan in March 2011.