The changes are due to engineering work and will affect trains on Sunday (July 6) only.
Services will continue as normal on Saturday (July 5).
We have outlined and simplified the details so you can plan your journey this weekend.
Sunday (July 6):
Engineering work is taking place between London Bridge and Peckham Rye and New Cross Gate and between Norwood Junction and Purley, closing some lines.
Replacement buses will replace trains between London Bridge and Tulse Hill (also calling additionally at Herne Hill).
Trains to and from Caterham and Tattenham Corner will run between Tulse Hill and Caterham and Tattenham Corner to an amended timetable.
A reduced number of trains will be able to run between Norwood Junction and Purley.
