Engineering work is taking place between Alexandra Palace and Stevenage via Welwyn Garden City, closing all lines early on Tuesday to Friday mornings.
Between 00:01 and 05:10 each morning, buses will replace trains between Alexandra Palace and Stevenage via Welwyn Garden City.
Trains between London and Peterborough / Cambridge will be diverted to run via Hertford North (not calling).
Check before you travel:
These changes are not currently shown in the National Rail Enquiries Journey Planner, please check back nearer to the time of travel.
Replacement Bus Travel Advice:
For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use this page.
You can find the location of your bus replacement by checking station signs or by searching for your station on our station information pages.