To return to track my vote goes for house photographers. We've had em round at Rimmer Towers trying to flogs us aerial views of the estate "that they got while working on a 'commission' for a neighbour" And we arent that far west of Creepy Crawley and still in the Gatwick CTR.
BTW I didn't buy one if I want one I'll strap Mrs R in the A/c with the SLR on auto focus PHD mode and get it meself.