The case is before Lady Haldane, who in an earlier case involving For Women Scotland, determined that a GRC changes a person’s legal sex for the purposes of the Equality Act 2010, hence Sex Matters’ campaign to change the act to specify that the PC of ‘sex’ means biological only. https://www.telegraph.co.uk/politics/2023/09/19/scotland-self-id-law-trans-gender-westminster-unlawful/