The Supreme Court justices emphasised that transgender people already have protections against discrimination and harassment written into the Equality Act. The arguments in court centred on whether trans women with gender recognition certificates (GRC) should be treated as women by the Equality Act.

The U.K. Supreme Court's decision adds to the mounting rollback of protections for trans people across the globe.

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.