In England the government, NHS and many companies dumped illegal situations on us all because they weren't able to understand, or couldn't be bothered to read a ten year old act of parliament. Or, which is more likely, it suited their purposes at the time.
Now all of them, presumably including Downing Street, are proposing to install 'unisex' toilets in their buildings.
All of this begs the question "how can uni anything mean multiple" ? It is from the Latin UNUS from which unit is also derived. Uni means one, a unicycle has one wheel, or it did when I last looked.
So just how has unisex managed to be understood by some to mean many?