Rolfe
Adult human female
These organizations and companies who bought into the Stonewall bollocks really are going to have to be dragged kicking an screaming every step of the way to compliance. @Rolfe mentioned earlier that organizations like FWS and Sex Matters are loaded for bear to take on these cases. They are going to need to be if this is the tactic these recalcitrant arsehats are going to resort to.
Joanne Rowling has set up a legal aid fund that women can apply to for funding for bona fide cases where they want to sue a provider or take an employer to an employment tribunal. When it was first announced the usual crew of aggressive trans activists gleefully announced that they were going to paralyse the system with a flood of spurious claims. Some even posted screenshots of what they were doing. Rowling just laughed and said, do you think we didn't anticipate you'd do that? Do you think I haven't taken competent advice about how to run this? They soon gave up.