Over the past three days there have been suspicious packages discovered across London, Glasgow, Edinburgh and Essex.
Counter-terrorism police are investigating three small explosive devices at London Waterloo station, Heathrow and City Airport.
Olivia Joel went missing on December 15 and police had said they were increasingly concerned about her welfare
A South Western Railway service partially derailed in the Wimbledon area during rush hour, and disruption is expected to last for the day
The station has already endured heavily disrupted services throughout the month of August
Emergency services were called to the station after receiving reports of a loud bang
The incident occurred after a failure in the points system caused a South West Trains service to collide with a Network Rail wagon
Work should be completed by September, followed by a second phase of improvements