Engineering work is taking place from the end of Saturday service (approximately 01:20 Sunday) until approximately 08:20 Sunday morning, in the Finsbury Park area, closing some lines.
At the end of Saturday service, buses will replace trains between Finsbury Park / Hertford North and Peterborough / Letchworth Garden City.
From the start of Sunday service until approximately 08:15 on Sunday, buses replace trains between Welwyn Garden City / Hertford North and Hitchin.
Additionally, the 05:40 and 06:40 Peterborough to London Kings Cross services will not run. Rail replacement buses will run between Peterborough and Welwyn Garden City, for connecting trains to London.
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.