OldCrone...thanks for the link. Apologies to Tanni GT for being unaware of her speech.
However, the link I posted to a UKActive page gives Transgender Access Guidance and suggests...
"Does the individual want to use a changing or toilet facility that is consistent with the gender in which they present?" Allow Access.
And this (my italics)
"Changing:
Many facilities differ in terms of changing facilities available. You should support customers to use the changing facilities that are best for them.
Sex-segregated changing could be an option and a trans person should be permitted to use whichever single-sex area they choose.
How ever an operator may restrict access to this area if doing so can be objectively justified as a proportionate means of achieving a legitimate aim.
A customer may prefer to use separate changing facilities but they should not be forced to do so without prior discussion and agreement."
UKActive also suggest Stonewall, Gendered Intelligence & Mermaids for further reading.
UKActive therefore seem to be advocating that the choice of a trans person takes priority over anything else. As Chair of UKActive Tanni GT would be expected to be aware of this?