No trains will run between Victoria and Beckenham Junction and Shortlands for nine days in July, due to engineering works in the area.
The Penge tunnel will be closed between Saturday 23 and Sunday 31 July inclusive, to allow track replacement to take place on the Southeastern network.
What this means for passengers varies throughout the closure period. On weekdays, Beckenham Junction station will be open, and you will be able to travel south from there (to Shortlands and beyond) but you will not be able to travel north from Beckenham Junction, towards central London.
Stations affected along this route are Kent House, Penge East, Sydenham Hill, West Dulwich, Herne Hill and Brixton.
On weekdays, a shuttle train will run between Beckenham Junction and Orpington — you can change at Orpington for direct trains into central London.
On weekends, the closure extends to include Shortlands, so there will be no trains at all from Beckenham Junction. Trains from Shortlands will run into central London on the line via Catford, but not on the Penge line, where the work is taking place.
Replacement buses will run, and Southeastern tickets will be accepted on TfL bus services via any reasonable route. See the Southeastern website for full details and updates.
Network Rail has more information about the Penge Tunnel engineering works, which includes replacing 3,970 metres of track.