The A1(M) has reopened five hours after a woman was seriously injured in a crash and airlifted to hospital.

Crash investigators were called to the scene after a woman’s car collided with another car on the southbound stretch of the motorway between Junction 7 for Stevenage and Junction 6 for Welwyn at around 11am.

Her car then hit a tree before ending up on the hard shoulder with the woman trapped inside. Fire crews used cutting equipment to free her by midday before she was airlifted to Addenbrooke’s Hospital in Cambridge with serious leg and chest injuries.

The southbound stretch of the motorway was fully closed around Junction 7 but has just reopened, although traffic is expected to remain heavy for some time.

The driver of the other car was taken to Lister Hospital in Stevenage by land ambulance. Their injuries are believed not to be life-threatening.