Train services through south London are disrupted this morning after yesterday’s derailment of a Southern train outside Selhurst depot. The incident was made worse by a failure affecting track circuits between Norwood Junction and London Bridge.

National Rail has warned of major delays in south London, after 'a number of incidents' which are disrupting Thameslink, Gatwick Express and Southern services. A train has been derailed, and passengers were being urged not to travel on the affected routes. Although that warning has now been lifted, disruption is expected to continue for the rest of the day.