A signalling fault at Norwood Junction is causing delays and cancellations on the Southern line.

Due to the fault, trains are unable to run between Norwood Junction and Crystal Palace, with services up to London Bridge and London Victoria also affected by the incident.

A spokesman for National Rail said: "Services will also have to stop before all other signals towards London Bridge and gain verbal permission in order to proceed.

"This may cause some congestion and therefore delays of up to 20 minutes are likely."

National Rail are currently on site trying to fix the signalling fault.