Engineering work is taking place between Hadley Wood and Welwyn Garden City, closing some lines overnight from Monday evening until Friday morning.
Trains towards London will not call at Hatfield, Welham Green and Hadley Wood.
Trains towards Stevenage will be unable to call at Hadley Wood and Welham Green.
Rail replacement buses will run between New Barnet / Potters Bar and Welwyn Garden City serving these stations.
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 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.