24 Hours in A&E is one of Channel 4's groundbreaking and critically acclaimed programmes. This documentary takes a look behind the scenes at how this large-scale production is made through every stage of the process. It asks why King's College Hospital allowed the cameras in, what impact the series has had on the hospital staff, and why the public agree to be filmed. Unlike most documentaries, the series captures life in the Emergency Department using what's called a 'fixed rig'. This programme captures the rig being set up, as 92 remotely-operated cameras, 100 microphones and 16 miles of wiring are installed in the department by technicians. The programme shows how the crew of 170 - an unprecedented number for a documentary - is assembled and trained. The team work on site for six weeks of non-stop round-the-clock filming, handling 8000 hours of footage to make 28 episodes of the series, which is broadcast in 54 countries.

A woman with a weak immune system owing to the radiotherapy she underwent for breast cancer is bitten by her cat, a minor injury that could cause her serious problems. A 72-year-old with terminal cancer is brought in with breathing difficulties and a decision must be made about whether to resuscitate her if her condition worsens. Meanwhile, a 13-year-old translates for his Brazilian grandmother and a six-year-old has her head wound stitched.

An episode made in partnership with the British Heart Foundation, looking back at past stories from St George's. 24-year-old Corey has suffered cardiac arrest playing ice hockey. Angie's heart has been beating at over 150 for eight hours. Steve visits A&E with his symptoms a major concern.

Some of the most memorable stories from south London's St George's hospital, including Sir John and his devoted son Jonathan, and three-year-old Shane with a suspected broken leg.

A return to memorable stories from King's College A&E. Tony, who is 59 and a delivery driver, is airlifted to King's from Kent, after being badly hurt in a head-on road traffic collision. 79-year-old Jim is having difficulty breathing. Nicholas, 26, has been punched in the face, fracturing and dislocating his jaw. A patient brought in by police tries to escape.

A return to some memorable stories from King's College A&E. Pat, who is 71 and has a history of brain haemorrhages, is brought in after being found unconscious at home. Jim, 50, has a dislocated shoulder that takes a five-strong team to pull back into place. Chris, 21, has chest pains and has been coughing up blood. 48-year-old Bobby has been brought to King's after he suffered seizures at home.

A return to memorable stories from St George's. Eve, 83, has fallen down the stairs to her basement. Maddi, who is 4 and has previously had complex neck surgery, has fallen over on a train. A&E receptionist Julie reflects on her work and her love life.

A look back at some memorable stories from down the years. 19-year-old motorcyclist Sam is airlifted to St George's with multiple injuries after crashing into a van and being thrown under a car. 10-month-old Erin has a build-up of wax in her ears following a cold and fever. 48-year-old paraglider pilot Martin is airlifted to St George's after a gust of wind threw him into a cliff.

A look back at some of the most memorable stories filmed at King's College Hospital in South London. David is airlifted to King's after a 30-foot fall. Jade has been hit by a car and run over by a bus, and is in intensive care.

Featuring the stories of another three patients, including a retired air stewardess who was rushed into hospital after seriously cutting her leg as her best friend's 70th birthday party. Monica arrives in A&E with hip pain, and talks about growing up in Trinidad and her early years working in the UK as a nurse. Christine has stroke-like symptoms and is suffering with tremors on the left side of her body.

A look back at some of the most memorable stories filmed at King's College Hospital. Suzanne fights for her life after being punched by a stranger and hitting her head on the kerb. Rose, 91, has had a suspected stroke. A 30-year-old has broken his toe when he kicked a concrete block thinking it was a football.

A look back at some memorable patients filmed at King's in south London. 72-year-old Laura has suffered a suspected stroke. 65-year-old Christine is brought in by her friends after collapsing while playing bingo. Marjorie, 83, has pain behind her eye following a recent bout of shingles. Ronald, who is 84, has been bitten by his dog.

A look at memorable stories from St George's in South London, showcasing patients who've come to London from across the world, including Mohammed, from Somaliland, who's been hit by a bike.

Some memorable stories filmed at King's. Steve, who is 48, has been transferred from Kent, after blacking out and crashing while driving at 70 mph on a motorway. 2-year-old Cydney's parents have brought her into King's as she hasn't passed urine for two days. Christine, 61, has been rushed to A&E after collapsing unconscious at her sister's house.

In this reprise of memorable stories, Derren comes to St George's after fracturing his ankle while trampolining, and a former lollipop lady has been attacked by one of her cats.

Some memorable stories from St George's. 5-year-old Isa is rushed to A&E after being hit by a car and trapped underneath it. Florian, who is 21 and a drama student, tripped and hurt his foot rushing to class. Harry, 83, arrives with shortness of breath and chest pains after collapsing while shopping.

Memorable stories from St George's Hospital. Maria, who is 52, suffers from MS and has been brought to resus with suspected sepsis. 40-year-old Jibraeel has a cotton bud stuck in his ear. Mel, 71, is rushed in after being accidentally knocked down and run over by her husband while helping him park the car.

A look back at some of the most memorable stories filmed since 2011. At St George's, 79-year-old Carole is rushed to A&E with signs of a stroke. 10-year-old Aiden has hurt his foot on the monkey bars at school. Part-time wrestler Kieran comes in after injuring his knee in a bout.

A look back at some memorable stories from St George's. 8-year-old Billy is rushed to St George's after being crushed by falling bricks that were being stored on his front drive. Luke, who is 28 and has epilepsy, arrives after cutting his finger at work, and he is worried it may trigger a seizure. Jayden, 8, has a swollen eye after playing in a shed.

A look back at some memorable patients at St George's. John, 52, is airlifted to St George's after being accidentally hit in the face by a golf club and receiving a critical head injury. Richard, who is 30, has come into A&E after dislocating his thumb while cycling. 4-year-old Elliott has pushed a stone up his nose to hide it from his sister.

A look back at some memorable A&E stories. An 18-year-old motorcyclist suffers major trauma after colliding with two cars. A war veteran has had an accident at the gym.

A look back at some memorable A&E stories, including a bricklayer with multiple injuries after a fall, a personal trainer kicked by a horse, and a man whose nose won't stop bleeding.

A look back at some memorable A&E stories. A 20-year-old crashes his car into a wall at high speed. Gerry's heart rate is over 250 bpm and may need an electric shock to bring it down.

Some memorable stories from St George's A&E. 80-year-old Frances is rushed to St George's by air ambulance after falling backwards into her empty swimming pool. Pat, who is 68, awaits the results of an X-ray after injuring her leg on holiday. Graham, 54, has stubbed his toe trying to not tread on his friend's cat.

A look back at some memorable stories. Toddler Daisy arrives by air ambulance after being kicked in the head by a horse. 5-year-old Roman has pencil lead stuck in his ear.

Some memorable stories from St George's. 10-year-old Josh has severed his finger at school. Billy, a 19-year-old motocross rider, has been thrown off his bike during a race and suffered multiple spinal fractures. Mike, who is 54 and has epilepsy, arrives in minors with a bandage around his jaw after falling face-first onto the pavement.