Sex matters in life and in law.
It shouldn’t take courage to say so.
Clarity about sex is crucial for safeguarding everybody’s human rights.
We are campaigning to establish that sex matters in rules, laws, policies, language and culture. We aim to:
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1
Establish clarity on single sex services
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2
Enable people to speak up
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3
Make debate possible
What we do

- We lobby for clarity on sex in law and institutions.
- We publish research and analysis about human rights.
- We educate people about the law and about their rights.
- We support and mobilise people to speak up.
- We hold organisations accountable.
Our principles
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Reality
There are two sexes: female and male. People shouldn’t be afraid to say this.
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Clarity
Organisations and governments should be clear about the sexes and where sex matters.
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Human rights
Everybody’s human rights matter, including private life, freedom of beliefs and speech.
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Democracy
A cohesive society depends on open debate and evidence-based policy making.
Updates
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Will you support Sex Matters in 2024?
It has been a tumultuous year. Gender-critical campaigners in the UK have achieved major wins alongside setbacks and frustrations: Sex Matters...
29th November 2023
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An Epic crisis is unfolding in the NHS
Since October, several NHS trusts in England have been using new £450 million NHS patient-data software produced by US-based...
29th November 2023
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This is male violence against women
Today is White Ribbon Day, the start of an annual 16 days of activism opposing violence against women. Politicians,...
25th November 2023
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The escalating campaign of intimidation and violence against gender-critical women
After nearly 15,000 people signed our letter to Prime Minister Rishi Sunak, Joanna Cherry KC MP asked Laura Farris, Minister for...
24th November 2023