you cant make it up! the highway code is a "guide to driving" not a road bible, you have to judge whats around you, if a vehicle drives up my arse i am not going to pull in and let it dangerously overtake on my rear quarter, just wait for a nearside gap & your judgement in the situation and use the power of the vehicle your driving to safely pull out of its way, if you can say "only a fool breaks the 2 second rule" before passing an object within the same time as the car ahead of you, you are too close!