UK top court rules definition of 'a woman' based on sex at birth

Activists celebrate after hearing the outcome of the Supreme Court's ruling on how to define a 'woman', in London on April 16, 2025. [AFP]

Britain's Supreme Court ruled Wednesday the legal definition of a "woman" is based on a person's sex at birth, a landmark decision with far-reaching implications for the bitter debate over trans rights.

In a win for Scottish gender-critical campaigners who brought the case to the UK's highest court, five London judges unanimously ruled "the terms 'woman' and 'sex' in the Equality Act 2010 refer to a biological woman, and biological sex".