Just seen this. The London assembly are doing a consultation on public toilets in London. I personally find it a nightmare in so many places and this is something that I think impacts women more, if they have children or even long after..!
Please can I encourage you to fill in the survey - it's very poorly designed but it's important the assembly get a feel for how important this is.
survey.alchemer.eu/s3/90382235/Public-toilets-in-London