Engineering work is taking place between Stevenage and Biggleswade, closing some lines on Sunday morning.
Before 08:20, buses will replace trains between Stevenage and Peterborough.
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.
Please be advised that, on occasion, replacement vehicles may be busier than usual, and you should allow extra time for your journey.