Toilets - Male, Female, and All Gender

I would think about toilets as male, female, and all gender. Or if not given that option, simply all gender. Though it is very important that many women have spaces that are segregated for them alone. After our conversation, I was left wondering what it would take to bring Canada's three to one toilet provision to the UK. So I asked my fellow toilet enthusiast, Patricia, to get on the case. She said: "There is no legislation whatsoever in this country... nor has there ever been"