The UK’s Supreme Court has ruled that “man”, “woman” and “sex” in the Equality Act 2010 refer to sex, not self-ID or paperwork (gender-recognition certificates). This agreed with our legal interpretation. We have published new guidance and are in the process of updating our publications to reflect the judgment. We are also working to provide answers to the questions we're hearing from supporters and the media. We will publish these as soon as possible.

Briefing on our intervention to the Supreme Court on the definition of sex

This six-page briefing looks at our key arguments why “sex” in the Equality Act 2010 should be construed as referring to biological sex.

Sex Matters, represented by Ben Cooper KC and David Welsh, is intervening in the appeal in the case of For Women Scotland v Scottish Ministers, which will be heard by the Supreme Court on 26th and 27th November 2024. Large-print version of this briefing.

Read the written intervention.