My 'tribute username' to the great Keeptoiletssafe would be 'Keeptoiletssimple', and my question to the links of West Lothian Council would be WHY?
Why change the configuration boys'/girl's/accessible plus some mixed sex provision as an add-on?
Why are you changing a configuration that works, that is popular, that is safer, that is more hygienic, for a configuration that doesn't work, may not be legal, and necessitates complicated and possibly non-compliant workarounds like children sharing toilets with adults..
Just why?
Of course, I know the answers already, but they are such unsatisfactory answers, that I'd love to just keep asking these people why?
I could even get all Classical on them and ask cui bono?
Is this expensive, disruptive, unsafe and unpopular departure from standard toilet configuration done for the benefit of a small number of people who could use the toilets designated for their sex, but choose not to? And you justify that expense how?