Seems like the UK is moving towards a biological treatment of the sexes in key situations like access to changing rooms and loos.
This, regardless of whether someone has had gender reassignment surgery.
I have to say, I don't have an opinion on the rightness or wrongness of this.
Definitely in favour of biology pre-surgery.
It may be easier simply to offer unisex loo options than try to thread the needle through the sensitivities of trans people who want access and of many women who want a biological-female-only zone.
It's a bit easier in sports where biology has to be employed for female sports to make any sense.