Updated at: 09-Oct-2025 08:38:41: AM
Operator: Great Northern
Routes affected:
Great Northern between London Kings Cross and Cambridge / Kings Lynn, and between Moorgate and Welwyn Garden City
Thameslink between London Kings Cross and Peterborough
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Description of Incident
Engineering work is taking place between Finsbury Park and Stevenage, closing all lines via Hertford North on Sunday to Thursday evenings.
From approximately 23:30 on Sunday to Thursday evenings until the end of service, buses will replace trains between Finsbury Park and Welwyn Garden City / Stevenage.
Trains between London and Cambridge / Peterborough will divert to run non-stop via Hertford North, with extended journey times.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
Replacement bus travel advice:
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.
For the very latest National Rail information click here.
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This page created on: 09-Oct-2025 08:38:41: AM