London Fire Brigade has confirmed the alarm has been triggered, but there is no sign as yet of any fire.
Major emergency at London Waterloo. Whole station has been evacuated - reasons why are unclear as of yet.
There are demands for a better deal for Kent rail commuters after it emerged they are paying 10% more than train passengers in other counties.
The leader of Kent County Council Paul Carter is calling on MPs to back a campaign for a "fairer deal for commuters".
He believes that commuters into London paid 10% above those from other counties, putting people off moving to East Kent regeneration areas.
The county council has called on the Government to ensure fairer prices, a move which has been backed by Canterbury MP Julian Brazier.
The incident happened shortly after 3.30am on Saturday, 26 April, at the entrance to the station. Investigations to date have enabled officers to isolate CCTV images of a woman they would like to identify and speak to as they believe she can assist with their enquiries.
A woman approached the station concourse's entrance doors which were closed and locked at that time of the morning. Realising she couldn't gain access to the station, the woman hit the glass pane first with her hands and then with her high-heeled shoes, causing the glass to crack
If you can help, please call British Transport Police on Freefone 0800 40 50 40, text 61016 or ring the independent charity Crimestoppers, anonymously, on 0800 555 111.
In all calls please quote incident reference GSUB/B8 of 23/05/2014.
British Transport Police have released these CCTV images of a woman they would like to speak to about criminal damage which took place at Oxford rail station. The incident happened around 3.30am on Saturday 26 April at the entrance to the station.
Rail passengers hit by delays and cancellations on Southeastern trains at the start of this year are to receive a record £1.5m pounds in compensation.
The sum is ten times that paid out in the same period last year. It's largely due to the closure of part of the Hastings to Tonbridge line following major landslips. Services finally returned to normal in March.