A motorist who was trapped inside his overturned car while unconscious has been cut free by firefighters and airlifted to hospital in a critical condition.

Magpas air ambulance was called in from Cambridgeshire after the incident in Norton Road, between Letchworth and Stotfold, at about 2pm this afternoon.

Firefighters cut the man in his 30s free from a silver Renault Clio – which had left the road – at about 2.40pm, before being stabilised by paramedics.

The air ambulance left the scene at about 3.35pm, bound for Addenbrooke’s Hospital in Cambridge.

Chris Martin, trauma and critical care lead for the East of England Ambulance Service, said: “Despite the severity of the incident, it was a fantastic team effort from all emergency services involved. A rapid extrication from the fire service was key as they had recognised it as a life-threatening situation. The level of care provided by EEAST staff and Magpas was superb from start to end, in what was an extremely difficult environment, my thanks to all those involved.”

The road remains closed.