Engineering work is taking place between Finsbury Park and Stevenage, closing all lines via Hertford North before 09:40.
Before 09:40, buses will replace trains between Finsbury Park / Alexandra Palace and Stevenage via Hertford North.
Additionally, before approximately 08:10, no northbound trains can call at Harringay, Hornsey or Alexandra Palace.
If you're travelling to Alexandra Palace from London, please travel via Finsbury Park / New Southgate and change for a train which will call at Alexandra Palace.
If you're travelling to Harringay or Hornsey, paper rail tickets will be accepted at no extra cost on London Buses.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
You can plan your journey on London Buses by using the Transport for London 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 set-down 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.