For Women Scotland has brought a legal challenge contesting the inclusion of transgender women under the legislation mandating 50% female representation on public boards in Scotland. The group argues that the current statutory guidance, which allows individuals with Gender Recognition Certificates to be counted as women, undermines the legislation's original intent and could have wide-reaching implications on sex-based rights and protections.

On April 16, 2025, the UK Supreme Court delivered its unanimous judgment in For Women Scotland Ltd v The Scottish Ministers, siding with the organization’s legal challenge against statutory guidance that treated trans women with a full Gender Recognition Certificate as women for public board gender representation. The ruling affirmed that under the Equality Act 2010, the terms 'sex', 'man', and 'woman' refer to biological sex. Critics argue that this decision, while framed as a protection of biological women's rights, may marginalize transgender individuals.

For Women Scotland secured a legal victory in the UK Supreme Court, with the court ruling that the terms 'woman' and 'sex' in the Equality Act 2010 refer to biological sex. This decision, delivered on April 16, 2025, emerged from a long-running legal battle with the Scottish Government and reinforces a narrow interpretation that excludes transgender individuals from certain legal protections.

For Women Scotland pursued legal action to challenge the inclusion of transgender women in the definition of 'woman' following revised guidelines by Scottish officials. The group's argument emphasized a strict biological definition of sex, seeking to restrict legal definitions to those born biologically female, an approach that has sparked controversy over its exclusion of transgender individuals.

For Women Scotland has appealed to the UK Supreme Court challenging the inclusive legal interpretation of 'woman' under the Equality Act, insisting on a biological definition. This move, following earlier legal rejections in Scottish courts, is seen as an effort to enforce a strict, sex-based definition of womanhood, a decision that critics argue undermines transgender rights.

The UK Supreme Court ruled that transgender women do not legally qualify as 'women' under the Equality Act, dismissing For Women Scotland’s appeal against a Scottish law mandating trans women inclusion on government boards. This decision reinforces exclusionary practices and has significant implications for trans rights.