A man has died while working on a moving walkway at Waterloo station.
Paramedics were unable to save the worker, who has yet to be identified, and he was pronounced dead shortly after 02:20 BST.
British Transport Police officers are investigating the death, which is not believed to be suspicious.
Passengers were advised they would be unable to change lines because of a fault with one of the Tube station’s two travelators.
A one-way system has been implemented at the station for the morning.