Overview
- The out-of-service Class 387, running between London Paddington and Reading, was stopped near Southall East Junction around 11:47 pm on November 8.
- The intruder reportedly moved through the train, activated passenger alarms, and gained access to the cab.
- The driver raised the alarm with GWR Control and left the cab before officers arrived.
- British Transport Police detained a man under the Mental Health Act, and he remains in hospital.
- Great Western Railway said no customers were on board, described the episode as unsettling but quickly contained, and is examining how access was gained.