A safety inspection of the track at Balcombe means trains have to run at a reduced speed. As a result, trains running between Haywards Heath and Gatwick Airport may be delayed by up to 15 minutes.
Disruption is expected to continue until 22:00.
Customer Advice
Your journey is likely to be delayed at Balcombe, between Three Bridges and Haywards Heath. Trains are running at reduced speeds, and we expect your journey could take up to 15 minutes longer than usual.Â
This affects Southern, Thameslink and Gatwick Express services.Â
You'll be able to see any further updates on this page, so please continue to check back here.Â
If you need to use another route, we'll let you know shortly.Â
 Planning your journey:Â
You can see a live map of the network here. This will now start to show where your journey is likely to be delayed. Â
Can you tell me more about the incident?Â
At the moment, we're working with colleagues at Network Rail to assess the situation.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
âââââââCompensation:
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.