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.

Data Bill – briefing for House of Lords debate on 12th May 2025

Following the recent Supreme Court judgment which has confirmed the importance of biological sex as a characteristic in life and in law, it is critical that the DVS system enables sex to be accurately recorded and verified. We explain why you should support the two amendments relating to this.

Large-print version of briefing.