To repeat what was said in a recent session of parliament, 'Stonewall do not make the law in the UK', my paraphrasing. I would even go so far as to say that their track record recently has shown that they have tried their hardest to make people believe the law says what Stonewall wants the law to say. And when you look at who advises them on law, who even fucking wrote the book about trans law in the UK, you begin to understand that the members of Stonewall have been very poorly served by their legal advisory team.
I take anything that Stonewall says now about law and government process with a truckload of salt.