Overrunning engineering works between Horsham and Three Bridges means that all lines are blocked. Trains rtunning between these stations will be cancelled or diverted via Dorking.

Disruption is expected until 06:30.

Customer Advice

Trains due to run between Horsham and Three Bridges cannot run on this route until further notice.

Please allow extra time to complete your travel this morning, and check station screens and planners for the latest information.

Ticket acceptance

You can use your ticket on the following, at no extra cost:

• Mutually between Southern and Thameslink services between Horsham and London
• Metrobus between Horsham and Three Bridges / Gatwick Airport

Planning your journey:

Live departure boards can be found here.

You can view a live map of the network here.

You can also use the apps to find up-to-date information.

Can you tell me more about the incident?

A points failure has been reported during engineering works overnight, and this is preventing trains from travelling on this route.

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.

There are various backup systems which allow signallers to try to "set" the points, and in some cases, the points may be available for trains in one of the directions they serve, but not another. However, with more severe failures like this one, the route is blocked entirely.

Network Rail have sent their specialist Signalling & Telecoms teams to site as a priority, and they will set up a safe method of working on the track. As soon as it's safe to go on the line, they 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.

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.