Train services to and from Waterloo have been disrupted after a derailed train damaged track at the entrance to the station.
A South West Trains service from Dorking was approaching Waterloo just before 6.30pm on Tuesday when the rear two carriages came off the rails.
The train was travelling at just five miles per hour at the time. No-one was injured and all passengers were quickly evacuated from the train.
The Rail Accident Investigation Branch (RAIB) immediately attended the site and began an independent investigation.
"We are working to repair the track that was damaged during the incident and to return services to normal as quickly as possible," says Network Rail route director Dave Pape. "However, this is likely to take most of the day.
"Passengers intending to travel to or from Waterloo today are advised to check with National Rail Enquiries or South West Trains before beginning their journeys."