This is due to engineering work and will affect trains from Monday to Thursday (October 27 to October 30).
Trains will run as normal on Friday (October 31).
We have broken down the details for you to plan ahead.
Monday and Tuesday (October 27 and October 28):
No Southern trains will run between Clapham Junction and Watford Junction.
On Saturday, a reduced number of trains will run between East Croydon and Clapham Junction.
Monday to Thursday (October 27 to October 30):
Engineering work is taking place overnight between Brighton and Worthing, closing some lines.
From approximately 11.30pm until the end of service on Monday to Thursday evenings, trains from London Victoria to Worthing will be diverted to terminate at Brighton.
Buses will replace trains between Brighton, Hove, Worthing, and West Worthing.
The 10.20pm train from Southampton Central to Brighton will not call at Southwick or Portslade.
A replacement bus will run from Worthing to Brighton calling at these stations.
The 10.52pm train from Portsmouth Harbour to Brighton train will terminate at Littlehampton.
A replacement bus will run from Littlehampton to Brighton, departing at 11.53pm and calling at all stations.
Journey times will be increased when using replacement buses.
