A senior academic who led a recent UK government review on sex and gender data has threatened legal action against the University of Bristol, accusing it of failing to protect her right to free speech after a talk was disrupted by protesters.
Professor Alice Sullivan has also raised concerns with the Office for Students, the higher education regulator for England, following an incident in which a lecture she delivered at the university was repeatedly disrupted by a trans rights protest.
Free speech dispute escalates
Universities in England have a legal duty to uphold freedom of speech for staff, students and visiting speakers, while also balancing the right to peaceful protest.
The issue has gained increased prominence since a strengthened freedom of speech law came into force in August, placing new obligations on higher education institutions.
Professor Sullivan argues that the University of Bristol failed to meet those obligations during an event where she spoke about her work on sex and gender data.
University rejects claims
The University of Bristol has strongly rejected the allegations, saying the talk went ahead safely and in line with its commitment to free speech.
A spokesperson said that while there was “unacceptable disruption” by protesters, appropriate measures were taken to allow the event to continue and to protect the speaker and attendees.
They added that all actions taken by the university were necessary for public safety and fully supported lawful free speech.
Background to the controversy
Professor Sullivan chaired a government-commissioned review published in March, which recommended that biological sex and gender identity should be recorded as separate categories in official data collection.
Her conclusions have been welcomed by some but criticised by trans rights activists, making her a controversial figure in ongoing debates about sex, gender and public policy.
She said she was first invited to speak at the University of Bristol in July 2024 and agreed to an in-person event later that year.
Concerns raised ahead of the event
In a letter sent by her lawyers, Professor Sullivan said the university initially suggested moving the event online rather than holding it on campus.
She told the BBC she did not fully appreciate the scale of potential protests at the time but accepted that people with opposing views had a right to express them.
However, she said peaceful protest should never amount to a “heckler’s veto” that prevents others from speaking or being heard.
Disruption during the talk
After delays, the event was eventually held on 22 October 2025.
As Professor Sullivan arrived, protesters gathered outside the building, with some filming and holding placards. Videos verified by the BBC show rude gestures and chanting directed at the speaker.
During the talk, the fire alarm was triggered more than once, forcing organisers to move the event to a higher floor on advice from security staff.
Professor Sullivan said she heard chants of “shame on you” as she left the building. Police attended the scene but confirmed that no arrests were made.
Legal action threatened
Professor Sullivan’s legal letter says the university had 15 months to arrange a secure venue on campus and failed to do so.
It also claims that internal documents show complaints were made by the university’s LGBTQ+ staff network objecting to her speaking.
She has raised these concerns with the Office for Students, which has the power to fine universities that fail to uphold freedom of speech.
Regulatory context sharpens focus
The dispute follows a landmark case earlier this year in which the Office for Students fined the University of Sussex £585,000, finding that its transgender and non-binary inclusion policy had a chilling effect on free speech.
That case followed protests against philosopher Kathleen Stock, who later left her role at Sussex due to sustained opposition to her gender-critical views.
After the Sussex ruling, the University of Bristol withdrew a similar internal policy relating to the removal of material deemed transphobic.
Concerns over new law enforcement
Although the new free speech law came into force in August, the government has not yet implemented the promised complaints scheme to allow individuals to seek redress more easily.
Professor Sullivan has told the Office for Students that she believes “gender ideology” influenced the university’s handling of her event.
She said senior university leaders could have apologised and committed to doing better in future, which she said is what she wants from the institution.
University response and next steps
The University of Bristol said its vice-chancellor has since met Professor Sullivan to discuss her concerns.
The university said it condemns the intimidating behaviour of protesters, stressing that there is no legal protection for speech that incites harassment or intimidation.
It added that disciplinary action will be taken if any members of the university community are identified as being involved in the disruption.
