So
@Pale Rider asked what my thoughts were on trans women with a particular focus on a man who simply says he's a woman. That's not actually realistic and I've gone further to describe what is a real life scenario.
Scenario is I've taken a female name, let's be consistent and use Simone, donned women's clothing and left the house.
I'm not well built, slighter then many women. Were I to enter a women's toilet then provided I was clean shaven, right now though I've a full beard, and use the cubicle properly and discreetly I'd probably not ring an alarm. A gym or swimming change area less so, though if I used a cubicle I might get away.
Obvs, being indiscreet, even short of literal willy waving, might well contravene rules/laws and I'd rightly be unceremoniously ejected and maybe prosecuted. The laws/rules are there for a reason. A natal woman outraging decency though would be in trouble to same degree.
I've limited sympathy with somebody trying it that way. If you're genuine there's a well trodden path. No heed to mix yourself up with mischief makers or whatever.
It not what happens when people transition. Neither is it what the stalled Scottish Self ID law, or that promised in the May era for England and Wales envisaged.
Medical/psychological advice would likely be taken. There's guidance and books galore on how to do it properly.
I witnessed one man do it for their entire journey. Early sixties, recently widowed. Apparently he was gender incongruent in youth but with no realistic means of pursuing it in the sixties he packed it away, married had kids etc and looked/behaved like any other male Senior Civil Servant.
Hair was allowed to go long. At some stage hormone treatment was embarked upon so breasts formed but to be honest he looked like a man in late middle age who'd let himself 'go to seed'. Still used the men's facilities and male name. At some point, it was accidental as a result of someone else's not following the signs and being flippant during a proper discussion per the meeting agenda on legal aspects of trans process, he blurted out that he was trans.
They took themselves out of circulation for a while and returned the following spring using a female name dressing as a woman. At about that point they used the female facilities - to which nobody objected. A further lengthy absence ensued while surgery took place. Didn't wait for the NHS - paid for it.
To my mind Heather passed as an older woman. Mabe a bit Alastair Sim as Lady Bracknell but not obvious by any manner of means.
This was twenty or so years ago. More recently a lad who my son has been mates with since toddlers has embarked on the same journey. His incongruence was known/evident pre teens. Currently at the 'on hormones' stage and has adopted an androgynous name. Dressed that way for years!!