An HGV driver is in hospital after crashing into a roundabout.
Police described the incident near St Neots today as a “serious collision”.
They are appealing for witnesses.
At about 10.30am the HGV collided with the Tithe Farm roundabout linking the A428 with Cambridge Road (B1428).
Police and paramedics attended the scene.
The driver of the HGV, a man in his 50s, was taken to hospital with serious injuries. He remains in a critical condition.
Anyone who witnessed the collision should visit www.cambs.police.uk/report or call 101 quoting incident 160 of 3 November and ask to speak to the Road Policing Unit.