Sky Witness HD Friday

The medical teams are stretched to their limit as the summer season reaches its peak. Ambulances are scrambled in Majorca when a Brit races headfirst into a wall at 30kph

Australia's ambulance crews fight to save lives. Cameras capture moments of compassion, giving insight into the daily lives of emergency heroes

Follow the work of the New Zealand Customs agents in their quest to prevent illegal items passing through the country's borders.

Follow the work of the New Zealand Customs agents in their quest to prevent illegal items passing through the country's borders.

Following Australia's traffic enforcers as they deal with high-speed chases, defiant hooligans and explosive crashes

Following Australia's traffic enforcers as they deal with high-speed chases, defiant hooligans and explosive crashes

Officers prevent a student from entering the UK at Heathrow, and the team in Calais searches lorries for illegal immigrants

A countdown of the most incredible, hilarious and spectacular real-life crashes in the world - all caught on dashcam

Suspicious deaths lead to uncomfortable truths as Jenny, Donovan and Malik come face to face with a monster in their midst

Halstead and Marcel facilitate a trans-organ exchange. Asher and Cuevas help an assault survivor

A firefighter is struck by a power line and lashes out after her injury. Brett is visited by Scott and Amelia, and the rest of the crew enters a contest

Boden, Kidd and Severide work together to protect one of their own. Herrmann meets an inspiring young man at the Fire Academy. Talk of the annual CFD Gala dominates the firehouse

Fly-on-the-wall documentary following the lives of customs and immigration officers at Australia's biggest airports

Fly-on-the-wall documentary following the lives of customs and immigration officers at Australia's biggest airports

Fly-on-the-wall documentary following the lives of customs and immigration officers at Australia's biggest airports

Fly-on-the-wall documentary accessing the world of national security at Australia's biggest airports as customs and immigration officers tackle criminals.

Fly-on-the-wall documentary following the lives of customs and immigration officers at Australia's biggest airports

Fly-on-the-wall documentary following the lives of customs and immigration officers at Australia's biggest airports

Fly-on-the-wall documentary following the lives of customs and immigration officers at Australia's biggest airports

Fly-on-the-wall documentary accessing the world of national security at Australia's biggest airports as customs and immigration officers tackle criminals

Following an injury in the aftermath of an industrial fire, Severide and Seager team up to investigate an anonymous tip-off. A possible new recruit to 51 gets tested at a call

Agent Sykes struggles to cope on the anniversary of her sister's disappearance. Benson tries to get closure through a cold case

Stabler and Randall give Joe Jr. the chance to get clean or go to prison and Vargas and Jet plan to cut off Emery's smuggling routes

The discovery of three women's bodies in a lake sets the team off on a race to find a serial killer, only for Jubal to spot a link to a closed case

Voight faces a new threat in his fight to keep the city clean. The team gets a new chief and new wrinkles develop between Upton, Halstead and Voight

Tensions rise between Aaron and his crew when an old debt forces him to help a white supremacist. Elsewhere, Ronnie prepares to face Aaron for the first time

As Bash fights for Dr Bishop's legacy, he finally gets the answers to big questions about his own future

Documentary following members of the New Zealand highway patrol as they witness the best and worst behaviour on the nation's busiest motorway

Documentary following members of the New Zealand highway patrol as they witness the best and worst behaviour on the nation's busiest motorway

Police officers use unmarked cars fitted with on-board video cameras, offering an insight into vehicle crime and how it can be prevented

Footage of car crime and ways it can be prevented, featuring a suspicious-looking man who's wearing two sets of clothes, and youths stealing a car