Meanwhile, Zack Polanski, Green Party leader in England and Wales, has argued transgender inmates born as men should be allowed to be held in women's prisons.
Speaking on a visit to Glasgow on the campaign ahead of Scottish Parliament elections in May, he suggested the focus should be shifted from 'very niche cases.
Mr Polanski said the attention should instead be on simply assessing inmates on a case-by-case basis.
He urged Rowling to have more compassion, adding transgender people 'just want to pee in peace'.
Jeezo, I already knew Polanski was a loon but, fuck! Anyone still considering voting Green needs that tattooed on the inside of their eyelids.