A student has described how passengers were held on a train at Bishop’s Stortford railway station while police arrested a gang of youths who had tried to rob two men on the service from Tottenham Hale. Maria Carter was returning from a trip to the theatre in London with her drama class and had boarded a late-night train at Tottenham Hale, which was a direct service to Stortford. “We hadn’t noticed any disturbance [on the journey], but when we got to Stortford and went to leave the doors wouldn’t open,” said the 18-year-old student of Herts and Essex High School in Warwick Road. She said that w…