A Tube user has suffered serious leg injuries after he fell from a platform at Oxford Circus Station on Wednesday evening.
It happened at around 5.30pm on Wednesday, when witnesses say the Victoria Line platform was extremely busy. The man was taken to a major trauma centre with serious leg injuries, emergency services said.
Victoria Line trains were cancelled and suffered severe delays after the incident.
Former England cricketer told the PA News Agency the platform was the "most packed" she had ever seen in her 35 years living in London.
She said: "As the train was coming in he was at the very front ... it looked like he swivelled and lost his balance, it looked like a fall.
"He sort of fell on his back. The way it looked to me he could have almost froze."
Ms Rainford-Brent said the man appeared to be in his mid-to-late 20s, had dark hair and was wearing a dark jacket.
A British Transport Police spokesman said: "BTP officers were called to Oxford Circus today at 5.33pm following a report that a person had been struck by a train.
"It's believed a man suffered a medical episode and fell onto the tracks. He is in a critical condition in hospital."
A London Ambulance Service spokesman added: "We sent a number of resources to the scene including an incident response officer and our hazardous area response team.
"We also dispatched a trauma team from London's Air Ambulance. "Crews treated a man at the scene with leg injuries and took him to a major trauma centre by road."