Re: What if I object?
"So if I decline to give my consent how is it legal for you to film me?"
Completely legal, you have absolutely no say in the matter. In public, you have 'no reasonable expectation of privacy', so you may be filmed by councils, individuals, TV companies etc. There are restrictions on the publication of images and videos taken in public, your image cannot be used for promotional purposes without your consent, and minors have some protection from identification, etc, but you cannot stop people from filming you. You might not like it, but as the law stands, you kind of have to lump it.