Here in California You cannot film someone on their property without permission. People in public are fine. If you are just filming a flyby then you are good. NOW if you film someone and make that person or thier property the "Main Subject" of...
The laws in California may be very different to this side of the pond, so check your local statutes first... but in general: you should be covered by the incidental inclusion clause... unless your specific intent is to take a photograph of an...