Security Alarms on London Underground

MQT on 2007-05-23
Session date: 
May 23, 2007
Question By: 
Geoff Pope
Liberal Democrats
Asked Of: 
The Mayor


How many security alarms were raised in each underground station in each year since (and including) 2005/06? Please break this down by underground station.


Answer for Security Alarms on London Underground

Answer for Security Alarms on London Underground

Answered By: 
The Mayor

I have assumed that your question relates to alarms raised due to unattended items left by customers on our station and trains.When an item is discovered it is assessed by operational staff and if deemed to be suspicious a security alarm is raised. Detailed below for 2005 and 2006 are the statistics for those items which were initially assessed as suspicious causing a subsequent security alarm and attendance by British Transport Police.Following further assessment, all of them were found to be lost property with none of them being an explosive device.There are a number of operational factors that influence the distribution of these events across the system and so there is no correlation between the data and levels of security in place. Please see Appendix I.