AÂ trespass incident between Gatwick Airport and Earlswood means that trains have to run at reduced speed on all lines.
As a result, trains running through these stations may be delayed.
This is expected until 06:45.
Customer advice:
Your journey is likely to be delayed between Horley and Earlswood this morning, but there isn't an exact estimate for this at the moment.
Please leave at least 20 minutes of extra time for your journey.
You'll be able to see any further updates on this page, so please continue to check back here.
If you need to use another route, you will be informed, but this isn't currently necessary.
To see if your journey is affected, see the live map here.
Can you tell me more about the incident?
A trespass incident has been reported in the area.
As soon as trespassing is known about, the speed of trains in the area is reduced, as it's not safe to run services at their usual speeds when someone is on the track. Sometimes, we need to stop trains entirely. Emergency services and Network Rail responders will be attending to make sure the person is removed.
Trespassing on the railway is very dangerous. Trains run all day, every day - whether passenger trains, freight trains or specialist engineering work machines. It's not possible to be sure that you can hear when a train is coming, and in many cases, you won't see a train until it is very close to you.
In many areas, trains are powered by an electric third rail, which carries a dangerous electric current. There are also other electrical systems and cables, slippery surfaces, steep drops and other hazards.
Network Rail manage the railway infrastructure, and they're working hard to educate everyone about these dangers and prevent people from accessing the track. You can see their latest safety campaigns here.
As well as the dangers, trespassing on the railway is also illegal, and obstructing the railway can carry severe penalties.
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.