A safety inspection of the track between London Victoria and East Croydon means trains have to run at reduced speed towards East Croydon. Trains running between these stations may be delayed by up to 10 minutes.
Disruption is expected until 16:00.
Customer advice
You will need to allow extra time to travel this afternoon owing to a safety inspection of the track in the Balham area.
Services between London Victoria and East Croydon are likely to experience delays.
Please check live journey planners and listen for on board and station announcements.
Planning your journey:
The live departure boards can be found here.
You can view a live map of the network here, and you can also see the alternative route guide here.
If you're travelling in the London area, you can plan journeys on alternative routes by using the TfL Journey Planner here.
Can you tell me more about the incident?
Following earlier reports of a possible issue with the track in the affected area, Network Rail have had to put a speed restriction in place.
Your journey may be delayed by this, and in some cases, there may be some service changes, as this means the network has lower capacity, because trains take longer to travel along each section of track.
Gatwick Express and Southern are working with track engineers to ensure repairs are planned and completed as quickly as possible. Often, if these works involve the route being closed or a need for complex machinery, they'll need to happen overnight or during a weekend closure. Speed restrictions help prevent any further track damage until this is done.
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.