The problem with the whole issue of Aerial photography is in many cases getting good enough of a case together to meet the requirements for a prossicution.
Joe Bloggs pays Mr. A Pilot to go and take pictures of his house - Aerial Work, Illegal if a PPL.
However, Mr. A Pilot goes up and photographs a house that belongs to Joe Bloggs and then sells the photo and even though you and I know full well that Mr Pilot departed with the sole intention of taking photographs and selling them on i.e. aerial work, it is very hard to prove that is the case when Mr. Pilot is willing to swear that they were going flying anyway and just happened to snap a few (rolls) of photographs and by chance after the event a few people liked the photo's ebough to purchase them.
That is why some people can do it and with the hekp of their lawyers give two fingers to the CAA.
Regards,
DFC