Sex matters in life and in law.
It shouldn’t take courage to say so.
Make the Equality Act clear!
Our petition to the UK government has xx,xxx signatures. You can keep signing, and write to your MP.
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, guidance and analysis.
- 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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Let Women Speak in New Zealand
“The only way to describe the trans activist mob at Auckland today is feral. Kellie-Jay Keen had to get...
26th March 2023
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Fairness matters in sport
Philosopher Dr Jon Pike has written a guest blog post for Sex Matters, based on his recent article published...
24th March 2023
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A policy in search of evidence
Why we need to treat with caution claims about the specific harms of keeping trans-identifying men in male prisons
21st March 2023
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Sex Matters in the Equality Act webinar
Our director of advocacy, Helen Joyce, will be talking to our chair, Naomi Cunningham, and our executive director, Maya...
20th March 2023