A video has emerged after what appears to have been a police chase ended with a car  crashing and flipping onto its side.

In the clip, recorded at 5.19pm, a large black car with no number plate rounds a corner onto the main section of Tolpits Lane (A4145) at speed while being pursued by a police car with its sirens on.

Once travelling north, it appears to hit a tree and flip onto its side, before its pursuer stops behind it.

Man arrested. Update here.

There is a traffic island in the middle of the road, slightly before being opposite the tree. The crash looks to have torn off part of the bark of the tree.

Witnesses have said the road was then closed to traffic and more police cars and a fire engine were called to the scene.

Herts Police, Herts Fire and Rescue, and the East of England Ambulance Service have been contacted for more information.

Watford Observer: The section of the road where the crash took placeThe section of the road where the crash took place (Image: Google Street View)

As of 7pm, only two police cars and a recovery truck remained at the scene in Tolpits Lane.