Heli-medics scramble to the Peak District, where a dirt-buggy smash has left a rider with serious injuries. A farm worker tears his arm using a potato harvester, and Daryl receives three rapid shocks as the medics race to his aid amid concerns of a cardiac arrest.

Heli-medics scramble to the Peak District, where a dirt-buggy smash has left a rider with serious injuries. A farm worker tears his arm using a potato harvester, and Daryl receives three rapid shocks as the medics race to his aid amid concerns of a cardiac arrest.

Charlie has life-threatening injuries after coming off his dirt bike from a great height. The heli-medics race to treat him as a matter of great urgency. Worried parents watch on as medics treat their five-year-old child who is having seizures.

A motorcycle collision on the M25 creates chaos as the heli-medics close carriageways to treat a driver with an injured leg. A runner has a cardiac arrest during a park run and the heli-medics rush to the scene to give lifesaving treatment. Medics near Shepshed are called in to assist Glenn, who has fallen down the stairs fracturing his femur.

In Maulden, Yvonne collapses with a cardiac arrest. It's a race against the clock as the heli-medics try to help. In the Peaks, medics land on top of a steep ridge to rescue Donna, who has collapsed while walking. A motorcyclist collides with a car trying to avoid ducks crossing the road and medics fear multiple fractures.

The heli-medics help a man with a single penetrating wound in his back, but he does not know if he has been shot or stabbed. A cyclist is knocked off his bike.

The air ambulance crewsrace to help a teenage motorcyclist who has been hit by a car and catapulted into the air - suffering multiple fractures to his legs and arms. On holiday in Cumbria, a man collapses while working out and his stepdaughter performs CPR to try and keep him alive. On the M40, a man suffers a nasty leg wound when he's trapped in his lorry after being hit from behind.

In Oxfordshire, the heli-medics are dispatched to a motocross track where Mike has come off his bike, falling over 10 feet, and is experiencing altered sensations in both legs. In another motorcycle accident, Luke suffers a serious femur fracture and a piece of his bone is lying on the road. Near Kendal, Moon has a tonic-clonic seizure; and there's drama on the ambulance journey to hospital.

A head-on car accident in Cumbria leaves Nick's life hanging in the balance, East Anglian heli-meds land on a roundabout island to help Craig who has come off his motorbike and smashed headfirst into a signpost. Plus, medics battle extreme weather conditions to reach a man trapped under his JCB digger.

Return of the documentary following the work of Britain's busiest air ambulance crews. In Lanchester, heli-medics struggle to free a man trapped in his mangled car. A tree surgeon falls from height in Ashdon, breaking his femur. A motorbike accident in the Peaks sees medics rushing to the aid of Jamie, who has a seriously damaged arm and other fractures.