Train derails outside London Waterloo station
Passengers have been advised to avoid London Waterloo station all day after a train derailed outside the station.
London Ambulance Service (LAS) said it checked over three people but nobody was injured when the train partially left the tracks.
South West Trains have said a "signal failure and operational incident" was affecting services.
Ten platforms are already shut as part of engineering works to enlarge the station's capacity.
The ongoing £800m engineering project will get the station ready for longer trains and provide space for 30% extra passengers during the busiest times of the day.
The station is usually one of the busiest in the UK with an average of 270,000 journeys made to and from it each day.