In the absence/suppression of transexual voices, Maria Miller's Committee were led by the nose by Stephen Whittle, Stonewall and the likes of Jess Bradley.
Stephen Whittle is transsexual, so too Sarah Brown (Stonewall), Christine Burns, Karen Jones and many others who influenced policies including the GRA, prisons etc
The history of influence by TRAs and a small number of mostly male doctors is important, see thread:
www.mumsnet.com/Talk/womens_rights/3463920-Lets-go-back-to-2007
AngryAttackKittens wrote of thread above,
I'm going to point every "but the nice, harmless old school transsexuals whose movement has been unfairly appropriated by the nasty transgender people" person to this thread from now on.
All the same elements we're seeing now were there in that old BBC roundtable from the 70s with the 4 transwomen, the politician, and the doctor. None of this is new.