Watch: Video shows aftermath of train collision north of London

 A major train collision north of London on Friday left numerous passengers injured, with some describing a “big bang” and “bomb explosion” impact. Emergency services responded swiftly to the scene south of Bedford. Reports indicate potential for up to 50 casualties, with witnesses detailing severe injuries and widespread distress. Rail unions are closely monitoring the developing situation. A major train collision north of London on Friday left numerous passengers injured, with some describing a “big bang” and “bomb explosion” impact. Emergency services responded swiftly to the scene south of Bedford. Reports indicate potential for up to 50 casualties, with witnesses detailing severe injuries and widespread distress. Rail unions are closely monitoring the developing situation.