From southern:
On Monday a large hole developed below the track in the Forest Hill area (between East Croydon and London Bridge). Assessments and plans were made to repair and fill the hole with additional ballast material that supports the track and work on this repair has continued overnight. We are not currently able to estimate when the line will reopen however we currently expect a complete closure until at least mid afternoon today, Tuesday 19th July. We will continue to keep you updated as and when information becomes available.
From Network Rail / Thames Water
"Because of the location of the hole we are unable to run trains on this track through to London Bridge this morning and it looks likely that disruption to services will continue throughout the day. Passengers are advised to check before they travel and allow extra time for their journeys. Further details will follow as soon as they are available. We apologise sincerely for the disruption and assure passengers both Network Rail and Thames Water are working hard to restore the railway to full capacity."
Danny Leamon, Thames Water’s senior operations manager, said: “We’re acutely aware of the importance of this rail route. Our specialist teams worked through the night, and they’ll continue to work as fast as possible today to get the pipe fixed and help Network Rail get the track reopened.
”Our sewer is below the track, but it is too early to say whether the sewer pipe is the cause of the sinkhole.”
He added “This is an extremely complex job as the pipe is in a difficult location in the tracks and six metres below the ground. Engineers hope to finish repairs later today but we’re unable to put an exact time to it at this stage.”