OpheliaWitchoftheWoods
There has to immediately be a cheap, accessible, practical alternative to sex based provision. This is most likely in the short term to be enclosed single use cubicles and most likely to be the commandeered disabled ones, with all the issues involved, or re labelling of a proportionate number of cubicle rooms as gender neutral.
Why? Why all that disruption and expense for such a tiny number of transpeople - about 250,000, according to the last census?
Women's toilets for biological females, men's toilets for biological males is the cheapest, most accessible, practical solution, as most older buildings will have that configuration already, and all new building will have to have separated single sex toilets to meet with building regs.
Keeptoiletssafe has written in detail about the dangers of enclosed cubicles, and I have written many, many times, about the complete unacceptability of commandeering accessible toilets that disabled people campaigned for for decades, and handing them over to able-bodied transpeople simply because they prefer them.
Disabled toilets are not a preference for disabled people, they are a necessity.