It would appear that there are not trains on Saturday from FOH. The overground isn’t running between West Croydon and New Cross Gate. Replacement bus service for Southers between LBG and West Croydon via Sydenham.
Interestingly, no mention of replacement bus service on the Southern Site…
Network Rail are carrying out engineering work between London Bridge and East Croydon, closing some lines.
Thameslink - On Saturday, there will be no service from London Bridge to Brighton, due to this engineering work Bedford to Brighton services will call additionally at Balcombe.
London Overground - No service between New Cross Gate and West Croydon. Rail replacement buses will run as follows: (bus starts at London Bridge) - New Cross Gate - Brockley - Honor Oak Park - Forest Hill - Sydenham - Crystal Palace - Anerley (also for Penge West) - Norwood Junction - Selhurst - West Croydon. No service between Sydenham and Crystal Palace. Rail replacement buses will run as follows: New Cross Gate - Brockley - Honor Oak Park - Forest Hill - Sydenham - Crystal Palace.
Southern - Replacement buses will run between London Bridge and West Croydon via Sydenham
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
Non folding bicycles are not allowed on rail replacement bus services at any time. Folding bicycles are allowed if fully folded. For more information, please see here.
You can read more about engineering work and why it is necessary.