Police officers braved the icy waters of Carr Mill Reservoir in St Helens, Merseyside when they waded in to rescue a 41-year-old man who had driven a suspected stolen car into a lake.
Footage from the police helicopter shows the car disappearing under water, as five police officers enter the reservoir and undertake a rescue operation from the back of the vehicle.
Chief Superintendent Jon Ward said: "The officers involved in this pursuit and rescue acted with exceptional bravery, tenacity and professionalism to rescue the man on a bitterly cold, wet and miserable evening.
"Without a second thought given to their own safety and the conditions, they entered the freezing water and dragging him through the rear of the car just before it became completely submerged.
"We are extremely proud to have such outstanding officers serving for Merseyside.
"Police on the front line are vital in protecting our communities and the pursuit and rescue serves as a reminder of the real dangers that officers face to keep us all safe day in, day out."
The suspect has been arrested of unauthorised taking of a motor vehicle, burglary dwelling, dangerous driving and failing to stop.