Engineering work is taking place between London St Pancras International and Harpenden, closing some lines.
Until approximately 08:30 on Sunday morning, buses willreplace trains between London St Pancras International and Harpenden.
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.