The Scottish government had argued that transgender people with a gender recognition certificate (GRC) are entitled to sex-based protections, while For Women Scotland argues they only apply to people that are born female. The ruling could have far-reaching implications across Scotland, England and Wales.

The U.K. Supreme Court ruled that a woman is someone born biologically female, excluding transgender people from the legal definition in a long-running dispute between a feminist group and the Scottish government.

The United Kingdom’s highest court ruled that the legal definition of “woman” excludes trans women, in a case with sweeping consequences for how equality laws are applied.