 Skysport Engineering was commissioned to build a replica Sopwith Pup  which could be suspended from a crane and "flown" and crashed with a  stuntman inside for the opening sequences of Biggless rescue.  Attention was given to every detail of its construction so that even  when it was burnt the charred remains would look authentic. The  wings and frame had to be selectively strengthened and weakened so  that it would crumple and break to look as though it has fallen from  1000ft, not 10ft as in reality.