Engineering work is taking place overnight in the Coulsdon South area, closing some lines.
From approximately 23:45 until the end of service on Monday to Thursday evenings, trains will be diverted and unable to call at stations between Horley and Purley via Redhill.
Replacement buses will run between East Croydon / Purley and Gatwick Airport / Three Bridges / Horsham.
Journey times will be increased when using replacement buses.
From approximately 23:59 on Monday to Thursday evenings until approximately 05:00 on Tuesday to Friday mornings, trains will be diverted and will not call at Coulsdon South, Merstham or Redhill.
Replacement buses will run between East Croydon and Gatwick Airport and between Purley and Horley to provide connections.
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 drop-off 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.