Thanks David. I think that nails down the origin of the photo that Colin has and explains why there are no other aircraft nearby. It wasn't a collision but damage caused by burning debris. Do we know the call letter for HE955? Could it have been JN-'Q'? i.e. another 'Q-Queenie'?

The question also arises, what was John Slade doing at 150 Sqn's airfield? How far apart were the landing grounds? And could he possibly have mistaken the photo for his own a/c and pencilled in the caption on the back of the photo later?