Engineering work will affect trains from Monday to Friday (October 13 to October 17).
We have broken down the details for you to plan ahead this week.
Monday to Friday (October 13 to October 17):
Engineering work is taking place between New Cross Gate and West Croydon and Crystal Palace, closing all lines.
After 11.45pm each night, buses will replace trains between London Bridge and East Croydon and Streatham Hill via Sydenham.
Some trains will be diverted to run via Tulse Hill and Crystal Palace, running with extended journey times.
Engineering work is also taking place between Barnham and Havant, closing some lines on Monday to Thursday evenings.
As a result, the 9.35pm train from London Victoria to Portsmouth Harbour and Bognor Regis service which would normally divide at Barnham to create the 11.15pm train from Barnham to Bognor Regis service will not divide.
The 11.15pm train from Barnham to Bognor Regis will start from an alternative platform at Barnham.
Passengers wishing to travel through to Bognor Regis will need to change trains at Barnham to complete your journey.
