This shocking dashcam footage shows the moment a car being chased by police shot the wrong way over a roundabout - then collided with another car and caught FIRE.

The crash happened on Tuesday (Dec 30) at 11.40am, between two major roundabouts just outside of Watford town centre, Herts.

The unsettling footage shows the dark grey Citroen C4 Picasso cutting across the car with the dashcam on approach to a roundabout, then zooming across the roundabout the wrong way.

It narrowly avoids colliding with a silver Volkswagen vehicle, before exiting the roundabout - and a moment later, crashing into a Land Rover Discovery, and bursting into flame.

This shocking dashcam footage shows the moment a car being chased by police shot the wrong way over a roundabout - then collided with another car and caught FIRE.

The crash happened on Tuesday (Dec 30) at 11.40am, between two major roundabouts just outside of Watford town centre, Herts.

The unsettling footage shows the dark grey Citroen C4 Picasso cutting across the car with the dashcam on approach to a roundabout, then zooming across the roundabout the wrong way.

It narrowly avoids colliding with a silver Volkswagen vehicle, before exiting the roundabout - and a moment later, crashing into a Land Rover Discovery, and bursting into flame.