I don't know but when you consider every shop seems to have them a lot of pubs have them. I would say not. They don't appear to be regulated in anyway to my, completely uneducated, eye
it does make me laugh in schools how at nativity plays you cannot take a photo of your own child without the schools permission
yet on a beach anyone can take pics where they like !!
It was the cubicle doors. If you stood up you could see over the door and the bottom of the door came to mid calf...felt like I was back at lower school...except you couldn't sit on these toilets...!!!!!!!!!!!!!!!!!