Transport for London : Congestion Charge - Official congestion charge website. The London scheme requires drivers to pay £5 per day if they wish to continue driving in central London during the scheme‘s hours of operation. You can pay the charge online via this website.
Mayor of London - Congestion Charging - Details of the congestion charge and proposals to extend the current central London congestion charging scheme westwards, to cover most of Kensington & Chelsea and Westminster.
Sod U Ken - London Congestion Charge site with debate, a national petition, traffic and transport links. Londoners express their opinions on the congestion charge being introduced by Ken Livingstone in February 2003
The London Congestion Charging Scheme - AA - An explanation from the AA about the scheme and how it works.