UPDATE: Okay, turns out that it was indeed the bull bar coming into contact with the guard making the knocking sound.....combined with the roof cage knocking against the cars roof rails:eek: Was a tricky one to pick up even though it was above me as it seemed to vibrate through to the front of the car.
Anyway, glad all knocking was a simple fix so I can now move onto the next problem(s) - see other threads:angel:
Thanks agian, Mick

