Until 08:45, engineering work is taking place between London Kings Cross and New Barnet, and also until 09:45 between Alexandra Palace and Hertford North, closing some lines.
From the start of service to 08:45, no trains will run between London Kings Cross and Welwyn Garden City.
Customers should use London Underground between London Kings cross and Finsbury Park.
Replacement buses will run between Finsbury Park and Welwyn Garden City.
From start of service to 09:45, Replacement buses will run between Finsbury Park and Stevenage via Hertford North.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
You can plan your journey on London Underground by using the Transport for London Journey Planner
Replacement Bus Travel Advice:
You can find the location of your bus replacement by checking station signs or by searching for your station on our station information pages.
Bicycles are not allowed on rail replacement bus services at any time, unless fully folded. More travel advice for your replacement bus journey is available by selecting the Train Operating Company you are travelling with here.