In the Times today. Stonewall, Gendered Intelligence and Institute for Constitutional and Democratic Research (never heard of them) have been granted permission to submit written evidence.
"In a petition against Westminster blocking the bill, Scottish ministers used the legal test of rationality, evaluating whether the decision to veto by Jack, secretary of state for Scotland, was “so outrageous in its defiance of logic or of accepted moral standards that no sensible person who had applied his mind to the question to be decided could have arrived at it”."
Because claiming men can ever become women is completely rational and sane.
https://www.thetimes.co.uk/article/6950c5fa-3df3-11ee-a531-67c16c100280?shareToken=2baf785cc18b1767927f591c910d4899