I think that if the tester had bothered to do a disciplined (Not for TV) lap, he could have taken at least one more scalp even under those conditions.
The tester knew that lightweight and soft compound tyres in the cold make for little mechanical grip so I reckon the test was for fun.
As far as tyres and weather conditions go, it was a fair test.
A Seven will never rule on TOP Gear....There is a bias against it.
TV Execs and Prepubescent young boys need a foolishly expensive and exotic looking Battle axe to drool over, and not a shiv.
I don't have a Caterham but I won't sell my seven excepting if a nice Cat was within grasp.