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Buses replace late night / early morning trains between Alexandra Palace and Stevenage via Welwyn Garden City from Sunday 6 to Friday 11 September 

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Engineering work details

Starts Sunday 06 September 2026 to Friday 11 September 2026

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Train operators affected

Route(s) affected

Great Northern between London Kings Cross and Cambridge / Kings Lynn and also between Moorgate and Welwyn Garden City

Thameslink between Horsham and Peterborough and also between Brighton and Cambridge

Description

Engineering work is taking place overnight in the Welwyn Garden City area, closing some lines.

From approximately 23:59 on Sunday to Thursday evenings until approximately 05:10 on Monday to Friday mornings. Buses will replace trains between Finsbury Park / Alexandra Palace and Welwyn Garden City / Stevenage. Trains which run between London and Cambridge / Kings Lynn / Peterborough will divert 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 drop-off 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.

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