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Britain sets out rules for single-sex spaces following landmark sex definition ruling

Published by Global Banking & Finance Review

Posted on May 21, 2026

2 min read

· Last updated: May 21, 2026

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Britain sets out rules for single-sex spaces following landmark sex definition ruling

New Guidance on Single-Sex Spaces and Legal Definition of Sex

Background and Context

LONDON, May 21 (Reuters) - Britain on Thursday published long-awaited guidance on applying equality law to single-sex spaces following a landmark 2025 ruling on the legal definition of sex, a move likely to intensify debate over transgender rights.

Scope of the Guidance

The guidance sets out when organisations can lawfully exclude transgender people from women-only and men-only spaces - including toilets, changing rooms, hospital wards, refuges and sports - after the Supreme Court affirmed in April last year that "sex" refers to biological sex.

Implications of the Supreme Court Ruling

That ruling means that a transgender woman is legally considered male, and a transgender man is considered female.

Government and Official Statements

Women and equalities minister Bridget Phillipson said in a statement that the code of practice would help ensure "organisations across Great Britain have clear guidance regarding its implementation, protecting people's rights across our country."

Parliamentary Process and Next Steps

The guidance, prepared by the Equality and Human Rights Commission, has been laid before parliament for a 40-day scrutiny period. If there is no objection, it will replace the existing 2011 code.

(Reporting by Sam Tabahriti; editing by William James)

Key Takeaways

  • The UK Supreme Court ruled on April 16, 2025 that under the Equality Act 2010, “man,” “woman,” and “sex” refer solely to biological sex—excluding transgender individuals, even with Gender Recognition Certificates, from that definition (commonslibrary.parliament.uk).
  • Following that ruling, the Equality and Human Rights Commission (EHRC) issued interim guidance and committed to a statutory Code of Practice, with the full guidance finally published on May 21, 2026 (addleshawgoddard.com).
  • The guidance clarifies when organisations—such as hospitals, shelters, sports clubs, and businesses—can lawfully exclude trans individuals from single‑sex spaces based on biological sex, addressing complexities around documentation and appearance (lbc.co.uk)

References

Frequently Asked Questions

What new guidance has Britain published regarding single-sex spaces?
Britain has set out rules for applying equality law to single-sex spaces following a Supreme Court ruling defining legal sex as biological sex.
How does the Supreme Court ruling define 'sex' in legal terms?
The Supreme Court affirmed that 'sex' refers to biological sex, meaning transgender women are legally classified as male and transgender men as female.
Where can organisations lawfully exclude transgender people under the new guidance?
Organisations can exclude transgender people from women-only and men-only spaces such as toilets, changing rooms, hospital wards, refuges, and sports.
What year did the Supreme Court make the landmark ruling on sex definition?
The Supreme Court made the ruling in April 2025.

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