Rail passengers heading in and out of London Euston have been warned of disruption on Wednesday after a number of major incidents.
A person has been hit by a train between the station and Watford Junction. A 25,000-volt overhead cable which powers trains has also come down outside London Euston.
The damage means no trains can currently serve platforms 1-7 at the major London terminus. A points failure near Wembley Central is adding to the disruption with Network Rail warning that lines are currently blocked.