A broken down train at Plumstead is causing delays between London Bridge and Dartford.
Southeastern reported problems just before 12pm and on Twitter said alternative transport is available.
The operator tweeted: "London Buses are still accepting tickets between Dartford and Lewisham because of a train fault between Plumstead and AbbeyWood."
According to Southeastern the faulty train has been moved (midday) but "possible disruption" is expected until around 2pm.
- Crowd trouble at Rotherham v Millwall game
- Fawkham nudists battle to save caravans at naturist club
- VIDEO: Has a ghost been caught on film at Orpington Priory?
- New Cross teen charged with firearms offences
- VIDEO: Funny or plain stupid? Gravesend prankster, Daniel Jarvis, attempts to give police officers parking fines