Lines reopened: disruption between London Kings Cross and Stevenage expected until 21:00 

Route(s) affected

Great Northern between London Kings Cross and Cambridge / Ely / Kings Lynn / Letchworth Garden City / Peterborough, and also between Moorgate and Stevenage

Hull Trains between London Kings Cross and Beverley / Hull

LNER between London Kings Cross and Leeds / Lincoln / Bradford Forster Square / Skipton / York / Edinburgh / Aberdeen

Lumo between London Kings Cross and Edinburgh

Thameslink between Brighton and Cambridge, and also between Horsham and Peterborough

Description

Lines have now reopened following a fault with the signalling system between New Barnet and Potters Bar. However, whilst service recovers, trains between London Kings Cross and Stevenage may still be delayed by up to 20 minutes or revised.

Disruption is expected until 21:00.

Great Northern and Thameslink customer advice:

Services can now call at New Barnet, Hadley Wood and Potters Bar.

Other Great Northern and Thameslink services running between London and Welwyn Garden City / Stevenage / Cambridge and Peterborough may have picked up delays of around 15-20 minutes in the Hadley Wood area. Some short notice alterations are possible whilst we work to return services to normal.

For most journeys, you can travel using your normal route but should allow some extra time.

Planning your journey:

You can check your journey using the Live Departure Boards, and you can view a live map of the network.

You can also see an alternative route guide.

You can also use the Great Northern and Thameslink apps to find up-to-date information.

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.