Glinner, welcome! Hope you stick around.
Not RTFT but just coming on to selflessly offer you more material then you could ever want for what I hope will be your next comedy venture, about gender stereotypes.
Go on! 
At my workplace we share our unadapted Ladies’ toilets and showers with male-bodied colleagues if they feel they are women.
No idea if this is a GRC status or not- legally nobody can ask.
Tbh I am too scared of the consequences to even talk to most of my female colleagues about it and clearly our HR dept is too.
We’ve stopped using the showers, which rules out cycling to work, and it is humiliating sharing toilet and washing space with male-bodied-adults.
It’s obvious that we don’t feel comfortable- I jump out of my skin every time I am at the sinks and see a big man in the mirror looming out from the cubicles behind me and then I stress about if an apology is the right thing or not. (Sorry MN guidelines to say ‘man’ here but please cut me some slack for context).
Like a lot of us on here I am in fear for my professional reputation/job if I kick up a fuss.
But I can definitely still see the comedy in the double standards of womaning at work in this situation: Male socialisation in meetings. Inappropriate hugs. Make up tips. The ‘describe the male-bodied-adult colleague without referring to their obvious characteristics’ dance. Completely fucking off our professional dress code. There is gold 
Anyway, I really hope you do this! 
PS, I always refer people to this thread if they don’t have first-hand of what goes on in the Ladies’...
www.mumsnet.com/Talk/womens_rights/3203454-What-do-you-use-the-womens-toilets-for