Engineering work is taking place overnight in the Alexandra Palace area, closing some lines.
From approximately 23:25 on Sunday to Thursday evenings until approximately 05:10 on Monday and Friday mornings, buses will replace trains between Alexandra Palace and Stevenage via Welwyn Garden City.
Trains between London and Cambridge / Kings Lynn / Peterborough will run to a revised timetable, diverting non-stop via Hertford North, and have extended journey times.
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 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.