Train derails near Lewes - LIVE: Southern give further service updates to passengers, 20 injured in major incident
A major incident was declared after three carriages of a train derailed onto their side, leaving a number of people trapped, near Lewes.
The ambulance service has confirmed 20 people were taken to hospital, including two with serious injuries, Network Rail confirm line will be closed until further notice.
A safety inspection was carried out on a railway line where a train derailed in Sussex less than 24 hours before an accident which left two passengers seriously injured.
At this stage it is not known if where the line was inspected is the same as the location of the crash.
See updates below...