A spokesman for the North East Ambulance Service said: "At 3.38 pm we received a 999 call to outside Catcote School, on Catcote Road, in Hartlepool, for a road accident involving a bus where a number of people were reported trapped under the vehicle.

"In total, six ambulances, one rapid response unit, an air ambulance, along with the police helicopter and two ambulance officers attended at the accident."

He went on: "In total, eight casualties with cuts, bumps and bruises were taken to Hartlepool Hospital. Two casualties with serious injuries were airlifted by both helicopters to James Cook (University Hospital) and a further 10 casualties were taken to North Tees General Hospital, including two people with serious head and neck injuries."