Ten years ago today London became the first city in Britain to introduce a congestion charge.
It was supposed to cure the capital's traffic problems but there were predictions it would kill off business as people stayed away.
So after a decade in action what has the charge really changed?
Our Political Correspondent Simon Harris takes a look at its impact.
More top news
London was today a city of sirens and half mast flags in the wake of another terror attack.
MPs said they would "carry on" and go to work "as usual" in defiance of the terrorist attack outside the Palace of Westminster.
A huge police operation is under way after a terror attack in Westminster.