A girl, aged 14, who was hit by a car in County Durham, was treated at the scene by a doctor led trauma team from the Great North Air Ambulance, before being flown to a hospital.
She had serious head injuries.
The journey to the Royal Victoria Infirmary in Newcastle took just eight minutes,
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Durham Police say four women and one man have been arrested and two people remain up a tree at the Pont Valley opencast demonstration.
Durham Constabulary have called in a specialist climbing team to help remove protesters at the Pont Valley site.
Residents of a 495-property housing estate in Newton Aycliffe are split over proposals to demolish and rebuild the site.