Engineering work is taking place between Potters Bar and Welwyn Garden City, closing some lines early on Tuesday to Friday mornings.
Between 00:25 and 05:15 on Tuesday to Friday mornings, trains towards Welwyn Garden City will not call at Welham Green. Replacement buses will run between Potters Bar and Welwyn Garden City via Welham Green.
Additionally, the 04:00 Welwyn Garden City to London Kings Cross will be replaced by a bus between Welwyn Garden City and Alexandra Palace.
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 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.