Disruption between London Kings Cross and Peterborough / Cambridge expected until 20:00
Service alteration details
Incident reported: Tuesday 20 January 2026 at 16:41
If you would like to follow this incident on X, please useWelwynGardenCity
Last updated
Tuesday 20 January 2026 at 18:23
Train operators affected
Route(s) affected
Grand Central services between London Kings Cross and Bradford Interchange / Sunderland
Great Northern services between London Kings Cross and Letchworth Garden City / Royston / Cambridge / Ely / Peterborough / Kings Lynn
Hull Trains services between London Kings Cross and Beverley / Hull
LNER services between London Kings Cross and Lincoln / Leeds / Harrogate / Bradford Forster Square / Skipton / York / Newcastle / Edinburgh / Aberdeen
Lumo services between London Kings Cross and Newcastle / Edinburgh
Thameslink services between Sevenoaks and Welwyn Garden City, and also between Horsham and Peterborough
Description
A safety inspection of the track between Welwyn Garden City and Stevenage means that trains will have to run at reduced speed on some northbound lines. As a result services between London Kings Cross and Peterborough / Cambridge may be delayed up to 30 minutes or revised.
Disruption is expected until 20:00.
Some services may divert via Hertford North where possible.
Customer advice for Thameslink / Great Northern:
Delays up to 30 minutes are possible, and some services may be subject to short notice alterations and cancellations. This means some services may have cancelled stops, or will terminate and restart at a different station to normal.
The following changes are expected to services running in both directions until further notice:
Thameslink services that run between Brighton and Cambridge will be suspended
Great Northern services that run between London Kings Cross and Cambridge will be reduced
Great Northern services that run between London Kings Cross and Ely / Kings Lynn will be reduced
In addition to this there will be delays up to 30 minutes and some services may be subject to short notice alterations and cancellations. This means some services may have cancelled stops, or will terminate and restart at a different station to normal.
Please check before you travel this evening and allow plenty of extra time - we'd advise at least an additional 30 minutes to complete your journey. You may have to take a different train than planned, or change trains en route in order to complete your journey this evening.
Ticket acceptance:
Your tickets will be accepted on the following services at no additional costs:
Thameslink and Great Northern services on any reasonable route towards your destination
East Midlands Railway services between Ely and Peterborough
CrossCountry services between Cambridge, Ely and Peterborough
Greater Anglia services between London Liverpool Street, Cambridge, Ely and Peterborough
LNER services between London Kings Cross, Stevenage and Peterborough
London Underground services on any reasonable route
Replacement buses:
Thameslink / Great Northern have requested buses from suppliers, but are still waiting for confirmation. If buses are available, we'll update this message with the details.
Bus journeys will take longer than the usual train service, and if possible, we'll provide a time estimate.
Planning your journey:
You can check train departures from your station here:
You can see 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 the Thameslink / Great Northern apps to find up-to-date information.
Can you tell me more about the incident?
We have had a report of a possible issue with the track in the affected area. Network Rail's engineers are attending as quickly as possible to carry out a detailed inspection.
There are various different types of defects, and the first advice usually comes from drivers or other staff travelling through the area. Response staff will check the location which has been specified and find out whether the track is still supported correctly, whether the rails themselves are in the usual condition, and if there are any problems with the fixings and metalwork which attach the rails to the sleepers.
Until this is done, trains will need to run at a much slower speed than usual, which will lead to a delay to your journey. This is a necessary safety precaution.
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.