Casualty, the long-running British medical drama, has confirmed that two of its most iconic actors will return for a special 40th-anniversary episode. Derek Thompson, who portrays the beloved character Charlie Fairhead, and George Rainsford, who plays Ethan Hardy, will reprise their roles in a two-part special set to air on BBC One and BBC iPlayer on September 5, 2026. The episodes will mark four decades since the show first premiered and will center around a high-stakes major incident at Holby City Hospital, pushing the emergency department team to their limits as lives hang in the balance. Thompson, who first appeared as Charlie Fairhead in the very first episode of Casualty in 1986, will return two years after his character officially retired in 2024. Charlie Fairhead has been a central figure in the show for nearly four decades, known for his leadership, resilience, and memorable storylines, including a romantic relationship with Dr. Baz Wilder and several near-death experiences. Rainsford, who played Ethan Hardy from 2014 to 2023, will also return for the anniversary episodes. Ethan Hardy, who left the emergency department to focus on raising his son, is seen in first-look images wearing a stethoscope and with a wound on his forehead, hinting at his return to the hospital’s chaotic environment. The special episodes will explore the impact of the major incident on the hospital staff, including characters like Dylan Keogh and Flynn Byron, as well as the return of Charlie and Ethan to help during the crisis. The storyline will also include a tense conversation between Charlie and Ethan, raising questions about their involvement in the incident and the challenges they face as they re-enter the high-pressure world of emergency medicine. This reunion of two long-standing characters is expected to be a highlight for fans, bringing together past and present storylines. The 40th-anniversary episodes will air on BBC One and BBC iPlayer on September 5, 2026, offering a fitting celebration of Casualty’s enduring legacy. The show, which has been a staple of British television for decades, continues to captivate audiences with its intense drama, skilled medical professionals, and the emotional lives of its characters. Fans are eagerly awaiting the return of Thompson and Rainsford, hoping to see how their characters will navigate the challenges of this milestone event.