this is the view (B737) when on Taxiway - B , just before the slight left hand turn to proceed towards the Cat11 holding point, which the BA747 failed to do, the building is clearly vizible just above the right wing of the B737 ahead, the time taken to taxi this short distamnce to the impact point is probably only 5 to 10 secs, and so a moments distraction, right at the point of the slight left turn, and one can see how quickly things can go wrong
