UPDATE: Disruption not expected to end until 8pm 

A signalling problem near Orpington Station is causing delays this evening.

Trains running from Orpington towards Sevenoaks are the worst affected.

Southeastern say their services may be diverted to a different route while engineers deal with the problem.

Trains may be delayed up to 15 minutes or revised.

A normal service is expected to resume at 6.30pm.