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http://www.aerialcinematography.com/index.html] [
http://www.camerasystems.com/products.htm]
If you only have a PPL you can't do anything legally and since it's illegal, you can't advertise in the papers, business will be limited and if someone doesn't like their picture, or is just a bit devious they can extort you or they can blackmail for your last dollar and may still turn you in, or they can call the cops (somewhat better) without blackmail.
[Extortion is where the erm, extorter threatens to do something illegal unless they are are paid while in blackmail the blackmail threatens to do something legal, I believe]
Its risky business for the illegal...If you really want to do it get the appropriate certifications...
I have proof of this with someone doing something similar up north!
And it's often guys like those who don't get caught and guys like you who do.