What if I object?
Hmmm... I'm not an expert on the Data Protection Act and so I'd welcome an opinion from somebody who is, but I'd like to know how this is legal if I object to being filmed.
I believe that video of me in which I can be identified is considered to be "personal data" within the meaning of the Data Protection Act (and the General Data Protection Regulation). In order to collect my personal data you must (a) inform me that you're going to do so, (b) inform me of the purposes for which you're gathering it and (c) obtain my consent to process it.
So if I decline to give my consent how is it legal for you to film me?