: A recurring tension-builder in the show is the ringing of the emergency "red phone," signaling the arrival of a critical trauma patient.

is a critically acclaimed British documentary series that provides an unfiltered look into the daily operations of some of the United Kingdom's busiest accident and emergency departments. Launched in 2011 on Channel 4 , it has become one of the network's most popular factual programs, winning the Royal Television Society Award for Best Documentary Series in 2012. Production & Format

: Each episode typically takes around nine weeks to edit, as producers weave together complex medical cases with personal backstories. Filming Locations