The world's longest-running medical drama, BBC's Casualty, is celebrating its 40th anniversary with a special two-part episode. The premiere opens with a scene mirroring the show's first episode from September 6, 1986, featuring a yellow VW Beetle and a major incident that overwhelms the fictional Holby City Hospital's emergency department.

Casualty debuted with groundbreaking realism, depicting the chaos of an NHS emergency room in unflinching detail. This portrayal was immediately controversial, with then-junior health minister Edwina Currie criticizing the show as "anti-NHS propaganda." However, the show resonated with the public, offering a sense of recognition for viewers who have experienced A&E departments.

Created by Jeremy Brock and Paul Unwin, the series was conceived as a "love letter to the NHS" and a warning about its state. Inspired by American dramas like MAS*H and Hill Street Blues, their pitch highlighted the A&E department as "the frontline in the battle for the soul of the NHS." The show's creators spent time shadowing staff at Bristol Royal Infirmary, with real-life Charge Nurse Peter Salt serving as an inspiration for Charlie Fairhead, the longest-serving character who appeared in the inaugural episode.

Over four decades, Casualty has evolved with advancements in television production and the healthcare system. Series producer Liza Mellody noted that while the show aims to remain realistic about hospital operations, it must also be fair as a BBC production, allowing audiences to form their own conclusions. The drama continues to explore compelling storylines, often incorporating elements of gore and medical procedure, alongside serialized character arcs.

The series has also served as a launchpad for numerous British actors, including Kate Winslet, Martin Freeman, Nicholas Hoult, Tom Hiddleston, Minnie Driver, Ray Winstone, and Orlando Bloom. Brenda Fricker, an Academy Award winner, also appeared on the show.

Casualty has tackled a wide range of significant social issues, from train crashes and riots to sexual assault and mental health crises. To maintain authenticity, writers meet with experienced NHS frontline medics four times a year to inform their storylines.

The 40th-anniversary episodes feature heart-throb doctor Flynn Byron, played by Olly Rix, responding to a suspected terrorist attack. The storyline involves an explosion, an underwater ambulance accident for Byron, and personal stakes for Dr. Dylan Keogh, portrayed by William Beck. Rix underwent extensive training for the underwater sequences, filmed at Pinewood Studios.

Producers hope the anniversary specials will not only engage the show's loyal fanbase, which has seen viewership numbers fluctuate from a peak of over 15 million in the 1990s to around three million currently, but also attract new viewers. "Casualty fans are so loyal," said Melanie Hill, who plays Siobhan McKenzie. "A lot of them have watched every episode. And the fact that it's the 40th anniversary, I'd like to think of it as a way a new audience can latch on."

In addition to celebrating its past, the show is also looking to the future. From the next series, Casualty will be set in Cardiff, where it has been filmed since 2011, rather than its fictional Holby setting. This move aims to better reflect the show's location and showcase the Welsh landscape and a new hospital set.

The 40th Anniversary special episodes are scheduled to air on BBC1 and BBC iPlayer. For its anniversary, Casualty aims to remind viewers of its blend of warmth, humor, entertainment, and adrenaline, asserting its relevance in the UK television landscape. by covering realistic scenarios with dramatic impact, in contrast to the prominence of US medical dramas.