There is severe disruption to Southern trains through Croydon this morning with a high number of services cancelled or delayed.The train operator said the trouble is due to a shortage of staff, including "a high level of conductor sickness".Southern has pre-cancelled some services in an effort to make it easier for passengers to plan their journeys, but said not all cancelled trains can be replaced with buses.The company has advised people to wait for the next running train, adding...
