My confusion comes from the memory that the episode racing the train is on Top Gear's show and featured the Exige vs. the helicopter at the very end. Fifth gear only featured a 111R with Tiff if I remember. Did I miss Fifth Gear's version?
Speed Channel website lists Fifth Gear, so we have that confirmed at the very least. Two 30 minute episodes, one being "Bargain Classics", so that suggests Tiff and not Jeremy as well.