Engineering work is taking place between Welwyn Garden City and Hitchin / Letchworth Garden City, closing some lines overnight.
Buses will replace trains between Welwyn Garden City / Hertford North and Hitchin until 07:40 on Sunday.
Also, the 01:07 London Kings Cross to Letchworth Garden City (Great Northern) service will terminate at Welwyn Garden City. A rail replacement bus (operated by Thameslink) will run from Welwyn Garden City to Letchworth Garden City, departing at 01:45.
Rail replacement buses are operated by both Great Northern and Thameslink. You can use your ticket at no extra cost on either service.
Check before you travel:
You can plan your journey using the National Rail 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 drop-off 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.