Engineering work is taking place until 06:30 between Finsbury Park and Hertford North / Stevenage, closing some lines.
From the start of Sunday service until approximately 06:30, buses replace trains between Finsbury Park and Hertford North / Hitchin.
Paper rail tickets will be accepted on London Buses between Alexandra Palace and Finsbury Park / Moorgate, and on London Underground between Finsbury Park and Kings Cross / Moorgate.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
You can plan your journey on London Buses / Underground 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 information, please use our travel information pages.
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 replacement vehicles may be busier than usual, and you should allow extra time for your journey.