Trains are being delayed as they pass through Lewisham this morning.
Southeastern Railway said they were investigating the problem. The company has promised more updates as the come in.
The delays were met with frustration by Twitter users.
Kate Eaton said: "I live ten miles from my workplace. I should not have to be wondering whether to allow TWO HOURS travelling time to get me to my desk, because @networkrail @NetworkRailSE and your company won't do their jobs properly."
Paul Gubbins said: "Every day there are now major delays. Looking forward to seeing the reduction in your 2018 fares to reflect the poor service this year."
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