Emergency Helicopter Medics Season 5 is yet to be announced by More4

Air ambulance crews race to mountain emergencies in the Lake District, as a walker goes into cardiac arrest on the banks of Ullswater and a biker is injured on a remote road.

A man suffers multiple injuries after a quad-bike accident on a farm near Penrith. Elsewhere, suspected anaphylaxis following a bee sting has the medics racing to the aid of Melody.

The heli-medics race to Linda, who has suffered a heart attack on a Norfolk beach, while motocross rider Alex is in a bad way after he's hit by another bike.

In Hertfordshire, the heli-medics help a man who is fighting for his life following a cardiac arrest. A tumble on an obstacle course leaves Vijitha with a painful open fracture.

A freak car accident in Cumbria leaves Richard fighting for his life. In Hampshire, horse rider Pat takes a nasty fall when her animal is spooked.

In County Durham heli-medics battle to keep Mick alive after he suffers a massive seizure. And in the Yorkshire Dales there's a dramatic hillside rescue for seriously-injured paraglider.

Helicopter medics fly to help teenage mountain biker Steven. A multi-vehicle collision in Bedford leaves 32-year-old Ashley with potentially life-changing injuries.

The helicopter medics battle bad weather in Cumbria to reach injured 70-year-old hill-walker Jenny. Scott's attempts at DIY land him in serious trouble, and biker Ronald needs urgent treatment after a crash.

Malcolm, who has had a cardiac arrest, is put under emergency anaesthetic on the hospital helipad. Helicopter medics rush to help elderly driver Bill after his car flips in Whitley Bay. And in Oxfordshire a sidecar race comes to an abrupt end for brothers Paul and Shane.

In County Durham, Anthony needs specialist attention after he comes off his motorbike. Helicopter medics are diverted from a training mission to help Deyon, who is trapped in his car after a crash on a country road. And in Norfolk there's an urgent call to a cardiac arrest.

The helicopter medics cut short an appearance at a charity event in Suffolk to treat a dirtbiker who's crashed at speed. Sammy has a cardiac arrest while working at a windfarm, and Stephen breaks his thigh while off-road motorbiking in the Pennines.

Helen is trapped in her car after a crash on the A66. Golfer Michael has collapsed with a suspected cardiac arrest in Hertfordshire. And 15-year-old Jamie is treated for a broken jaw and possible spinal injury after falling 10 feet.

In Oxfordshire a motocross collision leaves 12-year-old-Lewis with a painful broken thighbone, and paraglider Lucasz is treated for multiple fractures after a crash on the Cumbrian coast. A stabbing incident leaves Paul needing urgent medical attention near Hartford in Cambridgeshire.

In this episode, medics fly to the aid of mountain biker Rob in the Cumbrian mountains. Off-road motorbiker Dean is set to miss his mate's 50th after taking a nasty tumble. And 15-year-old Robbie needs urgent care when he falls from a coastal cliff in South Shields.

In this episode, the Heli-Medics battle to keep 48-year-old Paul alive as he suffers a series of heart attacks; Roger's emergency stop halts his day at a scooter rally; and, in Cumbria, there's a dramatic mountainside rescue for seriously injured cyclist Nick.

Steph is trapped with multiple injuries after a bad smash near Alnwick in Northumberland. An accident with a bonfire leaves Paul with serious burns. And in Thetford Forest in Norfolk, it's difficult for the medics to reach horse-rider Alice, who has badly broken her ankle.

Mountain-biker Ivan sustains a serious head injury in a fall in a remote part of a forest. In Teesside, four-year-old Abithan needs strong pain relief when he breaks his thigh bone. And 84-year-old farmer Derek fractures a previous hip replacement when he falls off a ladder.

Britain's air ambulance teams race to bring the hospital emergency department to where it's urgently needed. Mick is put into an induced coma after suffering a cardiac arrest on the tennis court. Fell-runner Michael is seriously injured by cows in Cumbria. And helicopter medics face danger as they treat Adrian, who's been crushed by a collapsed wall.

The air ambulance teams are called out to help Dennis, who's having a heart attack. A spin on her bike has catastrophic consequences for Carolyn. And there's a dramatic night-time car crash in Norfolk.

The air ambulance teams battle to save cyclist Graham's partially amputated leg. Rose is freed from a rolled car in Buckinghamshire. And Gary suffers a rare and extremely serious complete knee dislocation playing football but strong pain relief results in some unexpected hilarity.

Some strong pain relief results in unexpected hilarity following a serious footballing injury. Meanwhile, Rose is freed from a rolled car.

In Sunderland, medics must work quickly to try and save Susan's life following a major gas explosion. A boating accident on the Norfolk Broads leaves holidaymaker Carol with a partially amputated foot. And Kevin suffers multiple serious injuries when he comes off his motorbike.

The air ambulance teams race to help farmer Dennis, who's been pierced in the chest by a metal spike, motorcyclist Ian, who's crashed in the Lake District, and toddler Alistair, who is badly scalded

In this episode, medics use battlefield dressings to try to save the life of a man who's bleeding to death. Nine-year-old Ar-Rayyan has been hit by a car and has a nasty head injury. And a fall leaves septuagenarian Bonnie with a severely fractured ankle.

In this first episode, two motorcyclists need specialist care, as the helicopter medics try to save the life of Pete, while Tom may have a serious spinal injury. And a woman is kicked in the face by her horse.