Engineering work is taking place between Welwyn Garden City and Potters Bar each morning, closing some lines.
From 00:25 until 05:15 each morning Southbound trains will be unable to call at Hatfield, Welham Green or Hadley Wood.
Northbound trains will be unable to call at Hadley Wood or Welham Green.
Rail replacement buses will run between Welwyn Garden City and Potters Bar to serve these stations.
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.