AÂ fault with the signalling system at Dartford means trains running through the station may be delayed or diverted via Bexleyheath.
Disruption is expected until 07:00.
Whatâs Happened? A signalling problem has occurred near Dartford, and trains were unable to run from Dartford towards Sidcup.  All lines are now open again.
How does this affect my journey?
Trains are now able to run normally on the Sidcup line, but trains via Dartford may still be delayed by up to 20 minutes.  Some trains may be altered at short notice so that we can return services to normal as quickly as possible.
What do I need to do?
You can travel normally on all routes via Dartford, but please allow extra time for your journey this morning if you are travelling before 07:00
If your train was cancelled, you can use London Buses at no extra cost to travel to an alternative station on the Bexleyheath or Woolwich line for alternative services towards London.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.