Please report dangerous drivers to the police - Roadsafe. Report to plod, not just whinge here.

As an aside, right near my work (in Canning town which is not a part of London I enjoy - major shitehole)...a car had launched itself/been launched off an overpass (A13 I think) onto a slip-road below, multiple fire engines/ambulances in attendance. Sunday mornings eh. Methinks empty roads make people think they are on a closed race track or something. Stay safe out there.

fucking hell, I ride by there (on the lower slip roads) often. hope no-one badly hurt although it sounds serious for whoever was in the car. hope you get some results with your CCTV search too.