Disruption between London and Peterborough expected until 09:00
Service alteration details
Incident reported: Monday 02 November 2026 at 05:42
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Last updated
Monday 02 November 2026 at 07:14
Train operators affected
- Great Northern
- LNER
- Thameslink
Route(s) affected
Great Northern between London Kings Cross and Peterborough, and also between Moorgate and Welwyn Garden City
All LNER trains to / from London Kings Cross
Thameslink between Horsham / London Kings Cross and Peterborough, and between Brighton and Cambridge, and also between Sevenoaks and Welwyn Garden City
Description
A safety inspection of the track between Potters Bar and Welwyn Garden City means some lines are blocked. As a result of this, trains may be cancelled, delayed by up to 40 minutes or revised.
Additionally, services between Stevenage and Peterborough have been disrupted due to an earlier safety inspection of the track between Stevenage and Hitchin, although lines have reopened following this issue, services will be running at reduced speeds.
Disruption is expected until 09:00.
Great Northern / Thameslink customer advice:
If you are travelling between Potters Bar and Welwyn Garden City, you may need to use an alternative service to complete your journey. This is due to a safety inspection of the track in the Hatfield area.
Services through the affected area may be subject to delays, cancellations and alternation at short notice. You should allow an additional 30 minutes to complete your journey.
For the latest information, check station screens and use online journey planners.
If you're waiting on a train which is delayed between stations:
If your train is delayed between stations, please remain where you are and listen to announcements, or speak to staff for further information. We'll get you moving as soon as possible. We're aware of your location, and our teams will be doing everything they can to help you continue your journey.
Please don't leave the train unless you are asked to do so. Other trains may still be moving in the area, and the track is also a very hazardous environment.
Ticket Acceptance:
You can use your ticket at no extra cost on the following;
East Midlands Railway between Peterborough and London St Pancras International
Greater Anglia between Hertford East and London Liverpool Street
Great Northern services between Peterborough, Hertford North and London
LNER between Peterborough and London King's Cross
Thameslink services between Peterborough and London
Planning your journey:
You can see live maps of the network here:
These maps will now show where your journey is likely to be delayed.
You can also use the Thameslink or Great Northern apps to get more information about your journey.
Can you tell me more about the incident?
safety inspection of the track between Potters Bar and Welwyn Garden City is currently still ongoing. There is due to a report of a possible problem in the Hatfield area.
Services through the area may be delays, cancelled or revised. While Network Rail staff are inspection the issue, you should continue to allow additional time to complete your journey today.
Ticket flexibility:
If your train is cancelled, you will be able to travel on an alternative service operated by any other participating train company, either two hours before or two hours after the original departure time of the cancelled service, in order to reach your destination.
If you decide not to travel or cannot complete your journey due to cancellations, you are entitled to a full refund from your original point of sale.
For further information and guidance please contact your train company or speak to a member of railway staff.
Check before you travel:
You can check your journey using the National Rail 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.
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