Engineering work is taking place in the Hornsey area until 08:30, closing some lines.
Until approximately 08:05 on Sunday morning, northbound trains will be unable to call at Harringay or Hornsey.
Paper rail tickets will be accepted on London Buses to complete your journey at no extra cost.
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.