Unisex toilets and changing rooms are known to increase risks to women.
And the Supreme Court, and the EHRC, really could not have been clearer on the intention of the judgement, aka the intention of the EA2010.
No government is going to repeal the EA2010, so sex in the EA2010 was, is, and will remain, defined as the universally understood meaning of sex (i.e., reproductive class) and not by some made up definition that ignores basic science.
And for anyone who is still misunderstanding the intentions, or who plans to ignore the judgement and the law, can be referred to Arkell vs Pressdram 