Talk about disingenous.
If you click that link this is what it says on the Stonewall site:
Speak up for trans rights and help reform the Gender Recognition Act
The UK Government is consulting on vital new rights for trans (including non-binary) and intersex people. This could be a huge step forward for trans equality. It is crucial that the Government sees trans people and allies coming out in support.
Failure to secure these reforms would not just hold back trans people's rights, it would represent a major setback in our collective efforts to secure LGBT rights and equality.
That's why we need you to come out in support, get your friends, family and networks involved, and show that people across Britain support trans people’s right to be accepted and live free from hate.
Not a single mention of Self ID. Not a sausage. Just a load of guff about trans equality.
They know that self ID is the world's worst idea. They know it.