It was clearly a high-wing monoplane from the pre-war period...and it was a reasonable guess that the truck was British from the repurposed yellow number plate on the side. It wasn't too many jumps from there to the Short Scion, particularly since it's clearly a surviving airframe.
I'll have to ask someone else to come up with a new challenge....I just finished a 14-hr day and the rest of the week looks like it will follow the same pattern.