Data protection laws apply if such systems capture images of people outside the boundary of their private domestic property (which includes their garden).
Anyone using, or considering a CCTV system(including RING style doorbells) should look at the ICO’s guidance (https://ico.org.uk/your-data-matters/domestic-cctv-systems-guidance-for-people-using-cctv/).
It is important that villagers understand their rights and responsibilities, as well as the rules they must follow, if capturing images outside of their boundary.