The work will affect trains on Saturday and Sunday (April 26 and April 27).
We have outlined and simplified the details so you can plan your journey this week.
Saturday and Sunday (April 26 and April 27):
Engineering work is taking place between Shepherd’s Bush and Watford Junction, closing various lines on Saturday and Sunday.
As a result, no Southern trains will run between Shepherd’s Bush and Watford Junction.
Engineering work is also taking place between Hastings and Ashford International, closing all lines.
Replacement buses will run between Hastings and Ore, and Hastings and Ashford International.
Trains between Eastbourne and Hastings will run to an amended timetable.
Sunday (April 27):
Engineering work is taking place between Balham and Norwood Junction via Crystal Palace, closing all lines.
No trains will run between Balham and Crystal Palace or Norwood Junction.
Trains which usually run between London Victoria and London Bridge will only run between Crystal Palace and London Bridge.