When asked how people are allowed to use changing rooms this response was given by my gym.
Q : Are people free to use the bathrooms and changing rooms of the gender they identify with rather than their biological gender?
Answer: People will be using rooms for the gender they identify with as this is a protected characteristic under the Equality Act.
Q: How does this fit in with safeguarding?
As with other protected characteristics under the Equality Act, being transgender is not in itself an indicator of a safeguarding concern and it would be discriminatory to regard it in this way.
Which is true.
But I want to point out that women should have access to single sex provision. How do I do that concisely? So far all my replies just waffle on.