Disruption between Horsham and Barnham expected until 19:00
Service alteration details
Incident reported: Thursday 23 July 2026 at 17:18
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Last updated
Thursday 23 July 2026 at 18:30
Train operators affected
Route(s) affected
between London Victoria and Bognor Regis / Portsmouth Harbour
Description
A fault with the signalling system between Horsham and Arundel means that trains running between Horsham and Barnham may be delayed by up to 20 minutes or revised.
This is expected until 19:00.
Customer advice:
You can continue to use your planned route to travel, however services towards Bognor Regis and Portsmouth & Southsea are expected to be delayed by up to 20 minutes.
Please talk to station staff, look at information boards or check your journey planner for the latest information.
Planning your journey:
To help you with your journey, you can view the live departure boards and also a live map of the network.
You can also see an alternative route guide.
If you're travelling in the London area, you can plan journeys on alternative routes by using the TfL Journey Planner.
You can also use the Southern app to find up-to-date information.
Can you tell me more about the incident?
Southern have received a report of an issue affecting part of the signalling system in the Arundel area.
As a result, trains cannot be automatically allowed onto the relevant section of track. Train drivers will be stopped by red signals on approach. They will then get verbal permission from the signaller so that they can proceed, and will run at a heavily-reduced speed as far as the next signal. This is so that the drivers will stop safely if they see anything ahead of them.
In some areas, the sections between signals can be several miles long, so this can result in delays building up. Even with shorter sections of track affected, there would still be a delay of at least a few minutes to each journey.
Network Rail manage the signalling system and their staff will be investigating as quickly as possible.
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.
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