Critical Incident

In Hartlepool, PC Mick Johnson is stabbed in the arm as he attends reports of a man behaving strangely at a local convenience store. The shopkeeper is trapped inside with the knifeman, and so, despite his injuries, Mick heads in to get her to safety.

In Wiltshire, an officer fears for his life when a drunk man turns violent and threatens to kill him; a burglar deliberately drives at an officer who is trying to arrest him; a paramedic is attacked after she refuses to give a man a lift.

In Edinburgh, PC Fraser Bell severs his artery while trying to restrain a youth, but his quick-thinking colleague saves his life by stemming the blood flow. In Manchester, PC Ian Bruce is part of a specialist team tackling vehicle crime. It's a dangerous job, and Ian finds himself alone and vulnerable as a gang he's chasing goes on the attack, using their car as a weapon.

A detective has a chemical thrown in her face as she tries to apprehend a gang of burglars; a police officer is injured as he tries to arrest a man who is threatening to kill police officers with a machete; a paramedic is headbutted by a patient.

In Bedfordshire, PC Hayley Robinson has her ankle crushed after being driven at by a criminal in a car; fire crews across the country prepare for Bonfire Night, the most violent night of the year for attacks on firefighters.

A paramedic whose ambulance already had patients on board stops to assist in a road traffic accident. But as he tries to treat one of the people involved, he's headbutted so hard he's knocked unconscious. A rookie police officer experiences the darker side of the job when he is attacked by a patient he's guarding in a hospital.