Many years ago there were a series of VHS tapes called "Farnborough, The Golden Years" IIRC something like that any way I don't know if they are still available on DVD or not. I think it was on one of those that I saw it , I also knew several people (from my days in the weapons industry) who had actually seen it live.
Edited to add Amazon in fact have them on DVD
http://www.amazon.co.uk/s/ref=nb_ss_...0&Go.y=0&Go=Go