This isn't even a secret as the founder Allison Bailey said it was setup to oppose LGBT charity Stonewall
Perfectly reasonable to want an org for LGB people that doesn't call lesbians 'sexual racists' and promotes ''cotton ceiling'' workshops to train heterosexual men in how to coerce lesbians into sex with them.
The judge at AB's employment tribunal found that everything Allison had said about Stonewall was part of her protected belief, therefore worthy of respect in a democratic society, which wouldn't be the case if anything Allison had said about Stonewall was ''anti-trans''.
290. Applying the Grainger criteria to the beliefs she held, we concluded that her beliefs, not just about gender self-identity, but about the pernicious effect of Stonewall’s campaign promoting gender self-identity were genuine. We also found that these amounted to beliefs, not just opinions which might change with further evidence, because at the core of her opposition to Stonewall, frequently stated, was her understanding that their stance on gender theory – transwomen are women – a matter of their belief, underlay and was driving forward the erosion of women’s rights, access to single sex spaces and lesbian identity; it also underlay the characterisation of gender critical belief as transphobic and a hate crime, which was leading some to violence against gender critical believers.
And also:
292. Finally, we concluded that expressing hostility to Stonewall campaigning on the basis of gender self-identity did not seek to destroy the rights of others, in a way that would not be worthy of respect in a democratic society. It was part of the “dust and heat” (Milton: Areopagitica) generated by the conflict of opinion that must nonetheless be tolerated to avoid the greater evil of censorship.
293. We concluded that all the claimant’s pleaded beliefs, not just the belief that woman is sex not gender, are protected.