By sheer chance I happened to find an academic blog about the history of women's public toilets and the impact of the urinary leash. I was searching for something using the words 'women owned logo' (which is a business promotion scheme in the USA) and my finger slipped off the 'g', leaving me with a search for 'women owned loo'!
It's an interesting blog and what stood out to me is that the big London department stores only introduced women's toilets for commercial reasons, as they realised that it would help women to spend more money. Perhaps there is a lesson in that for the issues of today? I remember that in America they had the 19th century women's 'Rest Rooms' movement in big cities. I think those facilities were more similar to waiting rooms, in that they had a sitting area as well as the toilets, but anyone who has been to a hotel built in that era knows that ladies loos often have a sitting area as well as the toilet facilities. So there was a understanding of the privacy/safety need, as well as hygiene.
Women’s rights and the “loo leash”: the fight for public toilets in the UK | Water, Sanitation and Health (WASH) Blog
Thank you to the author for putting this article out there.