Disruption to Great Northern and Thameslink services between Alexandra Palace and Stevenage via Hertford North today
Service alteration details
Incident reported: Saturday 29 November 2025 at 12:26
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Last updated
Saturday 29 November 2025 at 13:04
Train operators affected
Route(s) affected
Great Northern and Thameslink services between Alexandra Palace and Stevenage
Description
A failure of the electricity supply between Alexandra Palace and Stevenage via Hertford North means Great Northern and Thameslink services between these stations are being disrupted.
As a result, trains will be cancelled, delayed by up to 60 minutes or revised.
Disruption is expected until the end of the day.
Customer advice:
DO NOT TRAVEL.
It is strongly advised that if you do not need to travel now then please delay until later on today. If you have to travel now as a matter of urgency then please allow an additional 90 minutes to complete your journey.
There is a failure of electricity supply in the in the Alexandra Palace area which means Great Northern services that run between Alexandra Palace and Stevenage via Hertford North are unable to run.
The following stations will have no service until further notice:
Bowes Park
Palmers Green
Winchmore Hill
Grange Park
Enfield Chase
Gordon Hill
Crews Hill
Cuffley
Bayford
Hertford North
Watton-at-Stone
A limited rail replacement has been requested to run between Alexandra Palace and Stevenage, but these have not yet arrived at their locations. Please speak to station staff for more information.
Trains are also unable to run between Finsbury Park towards Moorgate. The following stations will have no service until further notice:
Moorgate
Old Street
Essex Road
Drayton Park
There is a very limited service between Peterborough and Hitchin where the following stations may not have a service:
Peteborough
Huntington
St Neots
Sandy
Arlesey
Alexandra Palace also has a very limited service with only an hourly service towards London Kings Cross.
Service amendments:
Thameslink and Great Northern Services:
Three Bridges to Bedford have been suspended
Peterborough to Horsham services will be split and will look to run a Peterborough to London Kings Cross service on the North and a Horsham to Redhill service on the South
Bedford to Brighton will run as booked
Cambridge to Brighton have been suspended
Hitchin to London Kings Cross will run as booked
Welwyn Garden City to Moorgate services are suspended
Moorgate to Stevenage services are suspended
Ticket Acceptance:
You can use your ticket at no extra cost on the following alternatives:
Great Western Railway services between Redhill and Reigate
Southern and Thameslink services on any reasonable route
Greater Anglia services between London Liverpool Street and Cambridge
LNER services between London Kings Cross and Peterborough in both directions
London buses across London via any reasonable and up to Crews Hill
London Underground on any reasonable route
London Overground between Enfield Town and Liverpool Street
Metrobus 200 between Horsham and Gatwick
Planning your journey:
You can see the Great Northern live departure boards, and view a live map of the network.
You can also view an alternative route guide for Great Northern.
You can see the Thameslink live departure boards, and view a live map of the network.
You can also view an alternative route guide for Thameslink.
If you're travelling in the London area, you can plan journeys on alternative routes by using the TfL Journey Planner.
You can use the Great Northern / Thameslink app to find up-to-date information.
Can you tell me more about the incident?
A failure of electricity supply in the Alexandra Palace area means trains are unable to run any services that go via this station.
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.