Medics fight to save the lives of a young woman, Zoe, who collapses on Oxford Street; Rumen, who's been hit by a car and elderly farmer Bill who's been crushed by a cow.

Medics fight to save the lives of Mick who collapses after a cardiac arrest, motorcyclist Michael, critically injured in a high speed road accident, and a young man who has been stabbed.

Medics fight to save the lives of motorcyclist Vincent, who has been critically injured on a country road; 77-year-old Gudrun, who is rushed to hospital with a suspected stroke; and Ben, a young tree surgeon who has fallen 20 feet onto the pavement.

Young cyclist Janina is in cardiac arrest after an accident, doctors fight to stop Tony from bleeding to death and 11 year old Blake is left with a serious head injury after being hit by a car.

Follow three babies, minute by minute, second by second, as frontline midwives and neonatologists fight to keep them alive through the critical first hour birth.

Medics fight to save the lives of a young man who's been critically injured in a car crash; a cyclist involved in a collision with a lorry and a young woman whose heart has stopped after a sudden collapse in the street.