London Underground Tube stations have no light switches
23 January 2012 Last updated at 12:45 GMT
Councils have been turning off street lights to save money and protect other services from the cuts, but London has bucked the trend and added more lights in the last year.
And half of London Underground's Tube stations have no light switches which means the lights can never go out, and Transport for London (TfL) has no idea how much that is costing.
Andrew Cryan spoke to TfL's David Yeoll, street worker Madix and Shadow home affairs minister Stella Creasy on what the public think about the cost and safety implications of lights at night.