The disruption will affect services from Tuesday to Friday (July 15 to July 18).
We’ve broken down the changes for you to plan your week.
Engineering work is taking place overnight at various locations on the Southeastern network, closing some lines.
Tuesday, Thursday and Friday (July 15, July 17, and July 18):
From 12.15am until the end of service, services between London Victoria and Orpington via Beckenham Junction will be diverted via an alternative route between London Victoria and Shortlands.
The 12.27am train from London Victoria to Orpington will stop additionally at Denmark Hill.
Replacement buses will run between Denmark Hill and Orpington via Beckenham Junction calling at all stations from Herne Hill, also from Bromley South to Victoria calling at all stations except Brixton.
Friday only (July 18):
After 1am, the last train between London and Dartford via Bexleyheath will be diverted to Slade Green and connect with a replacement bus service between Slade Green and Dartford.
From 1.15am until the end of service, accessible buses replace trains between Slade Green and Dartford.