Following a trespass incident at Baldock earlier lines have reopened.
As normal service resumes, trains between Hitchin and Cambridge may still be delayed by up to 10 minutes.
Disruption is expected until 10:15.
Customer advice:
Trains between Baldock and Letchworth Garden City have now resumed running at normal speeds.
Planning your journey:
You can check train departures from your station here:
You can view live maps of our network here:
You can see our alternative route guides here:
If you're travelling in the London area, you can plan journeys on alternative routes by using the TfL Journey Planner here.
You can also use the apps to find up-to-date information.
Can you tell me more about the incident?
A trespass incident has been reported in the Baldock area. Network Rail have confirmed that no trespasser can be seen, therefore it is safe for trains to resume running at normal speeds.
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.