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Delays between London Kings Cross and Peterborough expected until the end of service 

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Service alteration details

Incident reported: Wednesday 18 February 2026 at 20:30

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Last updated

Wednesday 18 February 2026 at 22:30

Train operators affected

Route(s) affected

Grand Central services between London Kings Cross and Sunderland

Great Northern services between London Kings Cross and Finsbury Park / Letchworth City Garden / Royston / Cambridge / Ely / Kings Lynn

Hull Trains services between London Kings Cross and Hull

LNER services between London Kings Cross and Leeds / York / Newcastle / Edinburgh / Aberdeen

Lumo services between London Kings Cross and Glasgow Queen Street

Thameslink services between London Kings Cross and Cambridge / Peterborough

Description

A fault with the signalling system between London Kings Cross and Peterborough means that trains will have to run at reduced speed on all lines. As a result, trains running between these stations may be delayed up to 30 minutes, diverted or revised.

Delays are expected until the end of service.

Customer advice for Thameslink / Great Northern:

There are delays due to a signalling fault in the Brookmans Park area. This is affecting trains in both directions.

If you are looking to travel or are currently travelling between Potters Bar and Welwyn Garden City you will experience delays and there may be alterations to services. It may be quicker to use a different route than normal due to this issue. Please allow at least an additional 30 minutes time to complete your journey.

Some southbound trains from Stevenage will be diverted via Hertford North. For the latest information, please check on-line journey planners and live departure boards, or speak to station staff before you travel.

Ticket acceptance:

You can use your existing ticket on the below services at no additional cost:

  • Any other Thameslink and Great Northern services on any reasonable route from any London station towards your destination

  • LNER services between London Kings Cross and Stevenage / Peterborough

  • London Buses from London Kings Cross and Potters Bar

  • London Underground on any reasonable route on the north of London

  • Greater Anglia between London Liverpool and Cambridge / Ely

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.

You can also use Thameslink / Great Northern 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 are investigating, and we’ll share updates as soon as operators 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.