Would they not be breaching UK data protection and privacy rights of a non-public person who has done nothing illegal? I found this online
I'm not an expert on the law with regards photography and how its is used, so this info is based on you-tube videos, and how auditors take photos and videos
I believe if the photo is taken in a public place, then you have no right to privacy, even if you think, the person shouldnt be taking a photo of you. As for these photos being posted on Facebook, nothing wrong with this, but the only that might prevent the group remaining open, is the T&C of Facebook
There a local Facebook group, that posts photos of cars parked badly or even parked on pavements. Some motorists have tried to get the photos deleted, but facebook said these photos dont breach any of there guidelines
The only place where you would expect privacy, if the photo was taken on private ground, then there might be grounds, to stop the photographer