Buses replace late night / early morning trains between Potters Bar / Hertford North and Welwyn Garden City and Letchworth Garden City / Peterborough on Saturday 28 and Sunday 29 March
Engineering work details
Starts Saturday 28 March 2026 to Sunday 29 March 2026
Train operators affected
Route(s) affected
Great Northern between London Kings Cross and Letchworth Garden City / Cambridge, and between Moorgate and Letchworth Garden City
Thameslink between Horsham and Peterborough
Description
Engineering work is taking place overnight between Potters Bar and Peterborough / Letchworth Garden City, closing some lines.
At the end of Saturday service, buses replace trains between Potters Bar / Hertford North and Welwyn Garden City / Peterborough / Letchworth Garden City.
From the start of Sunday service until approximately 08:30, buses replace trains between Potters Bar and Welwyn Garden City / Letchworth Garden City / St Neots, and between Hertford North and Stevenage.
Additionally, until approximately 08:15, no trains will run between London Kings Cross and Finsbury Park.
Paper rail tickets will be accepted at no extra cost on London Buses / Underground between London Kings Cross and Finsbury Park / Alexandra Palace.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
You can plan your journey on London Buses / Underground by using the Transport for London 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.
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