Urgent track repairs need to be carried out between Brighton and Haywards Heath, meaning the lines are currently blocked. Trains running between these stations may be cancelled, delayed by up to 30 minutes or revised.
Disruption is expected until 08:30.
Customer advice:
No trains in either direction can run between Brighton and Haywards Heath until further notice.
Your journey will take up to 30 minutes longer than usual, and you must use an alternative route to reach your destination.
Trains can run between Brighton and Lewes and between Lewes and Haywards Heath.
If you are travelling between Brighton and Haywards Heath in either direction, you will need to first travel to Lewes, then change for a train towards your destination.
You can use your ticket to travel at no extra cost on Southern or Thameslink service on any reasonable route to complete your journey.
Planning your journey:
You can see a live map of the network here. This will show where your journey is likely to be affected.
You can also use the Southern and Thameslink apps to find up-to-date information.
Can you tell me more about the incident?
Teams have had a report of a possible issue with the track in this area. Network Rail's engineers are attending as quickly as possible to carry out a detailed inspection.
There are various different types of defects, and the first advice usually comes from drivers or other staff travelling through the area. Response staff will check the location which has been specified and find out whether the track is still supported correctly, whether the rails themselves are in the usual condition, and if there are any problems with the fixings and metalwork which attach the rails to the sleepers.
Until this is done, trains have been stopped from running both ways through this part of the network.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.