Train operator Southern has warned passengers of disruption to services on the Uckfield line over Easter.
Check before you travel and allow extra time for any journey is the advice.
Network Rail continues to rebuild London Bridge station as part of the Thameslink Programme.
Part of this work requires engineering work to upgrade the track and signalling systems in and around the station, and work is taking place this Easter weekend (Friday, April 18, to Monday, April 21, inclusive).
As a result, no Southern services will call at London Bridge on these days.
In addition, there will be no services between Oxted and South Croydon on Easter Day, April 20, which will affect Uckfield passengers. Passengers should take the train to Oxted and change there for a bus to Purley.
Passengers who are affected can find out about their options using the National Rail Enquiries Journey Planner or by calling 08457 48 49 50.
Need a service? Check the Uckfield Directory first