Disruption across the Great Northern and Thameslink network expected until 11:00
Service alteration details
Incident reported: Monday 01 December 2025 at 05:57
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Last updated
Monday 01 December 2025 at 07:11
Train operators affected
Route(s) affected
Great Northern between Ely / Kings Lynn / Cambridge / Letchworth Garden City and London Kings Cross
Thameslink between Cambridge and London Kings Cross / Brighton
Description
A problem in the depot in the Letchworth Garden City area means that Great Northern and Thameslink services across the network may be cancelled, delayed or revised.
Disruption is expected until 11:00.
Customer advice:
Early morning trains may be disrupted following a points failure in a depot at Letchworth. If you are travelling this morning, please check your journey in advance, and allow up to 30 minutes extra to reach your destination.
This may affect multiple routes on your network, so you may need to travel on a later train than usual, or change trains more times than usual during your journey. Details of the affected routes are as follows:
Trains between Kings Lynn and Ely
Some early morning services on this route may be cancelled. Rail replacement buses have been organised and will be running between Kings Lynn and Ely. Please check journey planners and station information boards for further details.
Planning your journey:
To help you plan your journey, you can find alternative route maps on the Thameslink and Great Northern websites.
Please check journey planners and station information boards before you travel and allow extra time to reach your destination.
Live departure boards for Thameslink and Great Northern trains can be found on their websites, and you can check a live disruption map for Thameslink or Great Northern services to see if your journey has been affected.
You can also use the Thameslink or Great Northern app to find up-to-date travel information.
Can you tell me more about the incident?
A points failure in a depot in the Letchworth area is preventing some trains from beginning their duties this morning. This means that some early morning trains may be cancelled, or run to a revised calling pattern.
Points are movable sections of track that guide trains onto different routes at junctions. If they develop a fault due to obstructions, electronic failures or other issues, trains cannot safely pass.
Network Rail is sending teams to investigate. Once on-site, they'll diagnose the fault and look for a quick fix. Some repairs may take longer if replacement parts or expert advice are needed.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use our Rail Replacement Services page.
You can find the pick-up and set-down location of rail replacement services by checking station signage or by searching for your station on our Find a Station page.
Please be advised that replacement vehicles may be busier than usual, and you should allow extra time for your journey.
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.