Looks like the 3rd car was a false alarm:
Fleet Street was also briefly closed after the discovery of another suspect vehicle, but has now reopened.
http://news.sky.com/skynews/article/0,,70131-1272910,00.html
So we have the car bomb and the “escape vehicle”
The device, which contained 60 litres of petrol, a large amount of nails and several gas canisters, was found in the Mercedes early this morning.
Park Lane has also been closed to traffic due to a suspect vehicle in an underground car park that police believe is connected to the attempted bombing in Haymarket.
Sky News crime correspondent said: “It might be the escape vehicle of the Mercedes driver, or it might be the vehicle of an accomplice, but it is turning into something very significant.”
http://news.sky.com/skynews/article/0,,70131-1272910,00.html
Hope this helps
Thank you. I’ll have to pay better attention to the next radio blurb.
As I jusr said in another thread - the correspondent on the ITV evening news just minutes ago reported that he believed an explosive device has been made safe in the second car.
Well hats off to that brave cop. Commendations and medals await I'm sure.