Things might be different in the UK about public filming or at least in Scotland which has its own legal system. This guy was convicted of filming women to get ideas for his cross dressing but there is no suggestion that he was doing it in their dressing room or under their skirts.
https://www.thescottishsun.co.uk/new...-fashion-tips/
So it might not be legal for people to photograph/film us (or anyone else) in Scotland without our permission.