Southeastern trains are not running between Charlton and Blackheath because of a derailed freight train.
The incident happened at Charlton yesterday meaning trains which normally run between London and Gillingham via Blackheath, Charlton and Woolwich Arsenal are liable to be diverted.
Some services will be diverted via Bexleyheath and passengers may use DLR services between Lewisham and Greenwich.
Southeastern say normal service should resume by 3pm.
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