An engineering train has derailed in south London causing the closure of the Gatwick Express service.
The train partly left the tracks at low speed outside Victoria station at about 03:00 BST.
No Gatwick Express trains are running, while Southern warned that its services will be “severely reduced”.
Network Rail said it was working to remove the train but passengers should “travel later in the day if possible” or seek an alternative route.
The train is stuck across a number of tracks meaning platforms nine to 13 at Victoria have been blocked, while services are not able to use the “slow/stopping” lines to and from Clapham Junction.
Some trains are also unable to leave the Battersea depot further reducing the number of services which can run.
Recovery teams have been deployed to remove the train but the tracks will also need to be repaired once it is gone, Southern have warned.
A Network Rail spokesperson said passengers should travel “via London Bridge or London Blackfriars as trains will be delayed, diverted or cancelled”.
Train tickets for Southern and Gatwick Express services are being accepted for reasonable routes on other services.
Disruption is expected to last throughout Tuesday.
Trains services affected:
- Gatwick Express services are completely suspended
- Services between London Victoria and Epsom Downs are suspended
- Services via Sutton may be cancelled at short notice, including trains which run to and from Horsham via Sutton
- Services between London Victoria and Reigate are likely to be cancelled at short notice or formed of fewer coaches than normal
- Trains are not serving Epsom Downs, Banstead, Belmont and Battersea Park
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