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Commuters are facing disruption this morning due to faulty signals in London.
Southeastern has suspended services from Sidcup between London Bridge and Dartford due to the problem at Hither Green and Lee.
Passengers are being told to take buses, where their train ticket will be accepted, as an alternative and faster route.
There is a "very limited" service to Dartford and trains may be diverted via Bexleyheath.
The train company tweeted: "Services are severely disrupted on the Sidcup line due to a signalling fault at Lee.
"Tickets accepted on London Buses between London Bridge and Dartford to help complete your journey."