Engineering work is taking place from the end of Saturday service (approximately 01:20 Sunday) until approximately 08:20 Sunday morning, between Potters Bar and Biggleswade / Letchworth Garden City.
At the end of Saturday service, buses will replace trains between Potters Bar / Stevenage and Letchworth Garden City.
Additionally, the 23:11 Horsham to Hitchin service will terminate at Finsbury Park. A rail replacement bus service will run between Finsbury Park and Peterborough.
From the start of Sunday service until approximately 08:20, buses will replace trains between Potters Bar / Stevenage and Letchworth Garden City / St Neots / Peterborough.
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.