Update: The man who was hit by a train at Raynes Park station, near Wimbledon, has been pronounced dead at the scene.
British Transport Police attended the scene alongside London Ambulance Service at around 6:45am this morning. Officers are now trying to establish the man's identity.
Raynes Park has reopened but South West Trains is now saying there will be severe disruption to its services until at least 3:30pm today.
Chaos started at rush hour this morning when all lines were blocked around the station, causing “severe disruption” to trains coming in and out of London Waterloo. Services affected include Guildford, Shepperton, Chessington South, Hampton Court, Dorking and Kingston.
Initially delays of up to an hour were expected until at least 11:30am, but South West Trains has since extended this to 2:30pm, and then 3:30pm today.
Commuters have been advised to seek alternative transport, including buses, underground and alternative train routes.
“Sorry for the disruption,” South West Trains tweeted this morning.
Severe disruption to trains to and from Waterloo is expected until 14:30 following a person hit by a train near #Wimbledon.— South West Trains (@SW_Trains) July 21, 2015