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, 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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Why the Equality Act should be sorted out with legislation
This is the fifth in a series of blog posts in the run up to the debate on 12th...
5th June 2023
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Less than a third of Brits say transwomen should be allowed in female-only spaces and sports
Sex Matters has today released the findings from a representative national poll. It finds that less than one in...
5th June 2023
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How the public-sector equality duty was turned against women
This is the fourth in a series of blog posts in the run up to the debate on 12th...
2nd June 2023