So yeah, Rachel Reeves, if you have a problem with transgender women using the bathroom or changing areas? Then you can wait outside. As can any other transphobe. I am not asking for permission to use women's spaces, I am asserting my rights to not be discriminated against for being transgender.
Before Maya Forstater's case a lot of things were up in the air and every single lawyer, legal expert and asshole with a website like myself was just guessing about how things would work or play out. That's sort of what law is in general. But now we actually have some definition on the playing field, we're starting to see the rules take shape and even despite a win; I don't think the gender criticals will be happy with the results once they set in.
The point of this misunderstanding is entirely to set up the legal backing for the idea that it would be lawful to exclude transgender women from women's spaces. If you have to actually be legally registered as female to be protected from discrimination on the basis of sex and therefore misogyny then automatically the vast majority of trans women are locked out. Not to mention every transgender child given that the GRA is only for 18+.
According to its 'about us' section, Survivor's Network was founded in 1990 by a group of female survivors of childhood sexual abuse to provide services that would support other female survivors. They were the first organisation in Brighton and Hove specifically focused on sexual abuse in childhood and the network has "grown considerably, while staying true to their activist roots".