Moment brave rail worker calmly walks towards Huntingdon 'knifeman'

This is the moment a brave railway worker approaches the suspect in the Huntingdon railway attack - before turning and warning passengers to keep fleeing. The worker, in a high-visibility jacket, sees the man calmly strolling down the platform in a black hooded jacket after injuring 11 people in a heinous knife attack on an LNER train on Saturday evening.