https://www.bbc.co.uk/news/articles/c74z8l8vkx3o
'The issues most frequently highlighted by those expressing concern were race and racism, as well as sex and gender, with women more likely to feel unable to speak out.
...
Prof Jo Phoenix won a case for constructive dismissal with the Open University, and a tribunal found she had faced harassment for her gender-critical views.
She said she welcomed the OfS guidance, but said some universities might take more to change their workplace culture, adding: "It's like bringing a bucket of water to a burning fire."'
The polling from OfS:
https://www.officeforstudents.org.uk/news-blog-and-events/press-and-media/ofs-publishes-free-speech-guidance-as-polling-shows-one-in-five-academics-do-not-feel-free-to-teach-controversial-views/
'Sex and gender is the top topic academics feel restricted discussing, and there is considerable variation depending on context. Perceived restrictions on discussing sex and gender are consistent across the political spectrum.'