Mr Mitchell had spent nearly an hour at the far end of the platform with his bag before falling forwards on to the track. He was wearing dark clothing.
Dr Rebecca Charles, a Rail Accident Investigation Branch inspector, said Mr Mitchell could be seen on CCTV placing his hand on the top edge of the platform and attempting to stand up. Minutes later, he was struck by the first train.
Asked by the coroner if Dr Charles had found any evidence to contradict that he was killed by the first train, she replied “no”.
Jubilee line drivers are known as train operators (TOs) because the trains use automatic train operation, which automatically accelerates and brakes the train for signals and stops, jurors heard.
The first TO was possibly distracted by another TO looking at Mr Mitchell’s bag, as the Tube arrived, Dr Charles said. This is known as “inattentional blindness”. His shift ended after arriving at Stratford.
A customer service agent at Stratford did not attempt to stop the fourth incoming train “because they were in shock” after seeing Mr Mitchell’s body.
A blow-up doll was reported by the train operator of the fifth train to pass over his body but one further train arrived after a miscommunication between customer service staff at Stratford.