A fault with the signalling system between Hitchin and Royston means that trains have to run at reduced speed on all lines.

As a result, trains may be delayed by up to 15 minutes or revised.

Disruption is expected until 13:15.

Customer Advice

If you are travelling now, you can continue to use your planned route, however, please expect delays of up to 15 minutes to your journey.

Planning your journey:

Please check journey planners and station information boards before you travel, and allow extra time to reach your destination.

To see if your journey has been affected you can use our live departure boards and live maps below:

Great Northern

• Live Departure Board
• Live Map

Thameslink

• Live Departure Board
• Live Map

Can you tell me more about the incident?

This part of the network uses track circuits to detect trains. If a circuit fails, the system may think a train is still there, blocking others from moving forward.

Drivers must stop at red signals and get verbal permission to proceed at a reduced speed, which can cause significant delays, especially in areas with long track sections.

Faults can be caused by electronic issues or track obstructions. Network Rail is investigating, and we’ll share updates as soon as we have them.

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.