Engineering work is taking place between Potters Bar / Hertford North and Stevenage / Hitchin / Royston / Peterborough, closing all lines.
From 01:00 until 02:00:
Buses will replace trains between Potters Bar and Welwyn Garden City.
From 02:00 until 08:00:
Buses will replace trains between Potters Bar / Stevenage and Peterborough. These buses will additionally call at Bedford for alternative Thameslink trains to / from London.
From 08:00 until 09:00:
Buses will replace trains between Potters Bar / Stevenage and St Neots. These buses will additionally call at Bedford for alternative Thameslink trains to / from London.
From 02:00 until 09:00:
Buses will replace trains between Potters Bar / Hertford North and Stevenage / Hitchin / Royston.
Ticket acceptance:
You can use your tickets on Greater Anglia services between Cambridge and London Liverpool Street, and on Thameslink services between Bedford and London St Pancras International.
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 replacement bus 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