In a report of the incident, which happened last October, the investigating Rail Accident Investigation Board (RAIB,) concluded:
The train dispatcher did not carry out a full safety check before allowing the train to depart;
The passenger attempted to board the train while the doors were closing;
The passenger alarm was operated after the train had travelled about 17 metres; under rules the driver should have stopped if part of the train was in a station - which it was. Instead he continued to the next station.
His actions, nowever, the RAIB stress, had “no effect” on what happened but his action could have under different circumstances “resulted in a more serious outcome.”
The RAIB make a number of recommendations to prevent anything similar happening again.
Renewed training is being given to train and station staff. There will be more frequent public address announcements warning passengers of the dangers of trying to board trains when the doors are closing.
Drivers are also being told to stop immediately if the alarm is raised while they are in or have just left a station.