Huntingdon train attack: Driver heard someone screaming about knifeman stabbing people

A train driver has told a court he heard someone screaming that a knifeman was stabbing people as he made an unscheduled stop at Huntingdon. Andrew Johnson was operating the London-bound LNER service when the attack occurred. He described the chaotic scenes as passengers fled the train. Mr Johnson told the jury he had only seconds to react to the unfolding emergency. The trial of Anthony Williams, who is accused of attempting to kill 10 people, continues.