A points failure has reoccurred between Three Bridges and Gatwick Airport. This means some lines towards London are blocked.

Trains may be delayed by up to 20 minutes or revised.

Disruption expected until the end of the day.

Customer advice:

If you are travelling between Horsham and Gatwick Airport, your journey may take up to 20 minutes longer than usual.

You can use your ticket to travel at no extra cost on:

• Alternative Southern or Thameslink services where available.
• Metrobus routes between Gatwick and Three Bridges - journey planners can be found here

Please check before you travel this afternoon, as you will likely need to allow extra time for your journey. You may need to take an earlier or later train than planned, or change trains en route.

To help you plan your journey, you can find our alternative route maps on our website here

Tickets will be accepted mutually on Southern and Thameslink services between Horsham, Three Bridges, Gatwick Airport and London.

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 or Thameslink app to find up-to-date information.

Can you tell me more about the incident?

A points failure has been reported, and this is preventing trains from using some of the routes through this area.

Points are moveable sections of track which can send trains onto different routes at junctions. These are part of the signalling system, generally managed by Network Rail.

Points can stop moving correctly for a number of reasons. For example, there may be an obstruction in the moving parts, or the electronic control systems may have developed a fault.

Network Rail will send their specialist Signalling & Telecoms teams to site, and they will set up a safe method of working on the track. To allow staff to access the railway, sometimes we have to stop trains completely, which can lead to your train being held at stations or signals en route.

As soon as it's safe to go on the line, the staff will diagnose the fault and find any quick solutions to resolve it.

Whilst this is being done, we will be monitoring progress closely. At times, replacement parts may be needed, or specialist advice from suppliers, which is why some points failures take longer to resolve than others.

We'd like to thank you for your patience during this incident.

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.