Train users can expect delays between Purley and Caterham, due to flooding.
Southern Rail have said the flooding is affecting the signal equipment.
Transport for London buses on route 407 are accepting rail passengers between Purley and Caterham via Kenley, Whyteleafe and Whyteleafe South.
Southern Rail is advising customers that services between Purley and Caterham
The Met Office has advised that today (February 6) may see up to an inch and a half of rain fall across Southern's network.
Network Rail is deploying water pumps and teams to known problem areas but passengers should be aware that services may be disrupted.
