A paramedic discovers that his critically-ill patient is a close friend.
One of the team collapses with a heart attack, and his colleagues fight to save him.
Nick Knowles presents exclusive footage of a dramatic rescue in the icy Southern Ocean.
The painstaking rescue of a 16-year-old girl at risk of paralysis after a car crash.
Two buses collide and the team face a life-or-death battle to save one of the drivers.
A family day out ends in a serious car smash, and two mothers treat four injured children.
Firefighters cut apart a supercar, and a family visit to a stately home ends in hospital.
A boy is badly hurt after a freak quarry accident, and a climber falls off a rock face.
A rap artist thrown from a speeding car fights for his life; only Helimed 99 can save him.
The team is forced to ask the RAF to switch off the UK's missile shield.
The team perform a major rescue operation after a people carrier leaves the motorway.
A man cutting logs for his wood-burning stove suffers a fractured skull.
A climber's first ascent in the Derbyshire Peak District ends in a serious fall.
Helimed 99 is the only hope of survival for a critically-injured nine-year-old boy.
A young mother is thrown 20 feet after she is knocked down near her home.
A 12-year-old boy fights for his life after his mum's car collides with a bus.
The team fight to save a farm worker's leg after an accident with a combine harvester.
A climber falls from a rockface in the Derbyshire Peak District.
A couple lose their daughter in an accident, only to find an identical girl still alive.